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The highway system of the United States is a network of interconnected state, U.S., and Interstate highways. Each of the fifty states, the District of Columbia, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands, and the U.S. Virgin Islands own and maintain a part of this vast system, including U.S. and Interstate highways, which are not owned or maintained at the federal level.

I-10 shield
I-510 shield

Interstate Highways have the highest speed limits and the highest traffic numbers. Interstates are numbered in a grid: even-numbered routes for east–west routes (with the lowest numbers along Mexico and the Gulf of Mexico), and odd-numbered routes are north–south routes (with the lowest numbers along the Pacific Ocean). Three-digit Interstates are, generally, either beltways or spurs of their parent Interstates (for example, Interstate 510 is a spur into the city of New Orleans, Louisiana, and is connected to Interstate 10).

US 2 shield
US 202 shield

U.S. Numbered Highways are the original interstate highways, dating back to 1926. U.S. Highways are also numbered in a grid: even numbered for east–west routes (with the lowest numbers along Canada) and odd numbered for north–south routes (with the lowest numbers along the Atlantic Ocean). Three-digit highways, also known as "child routes," are branches off their main one- or two-digit "parents" (for example, U.S. Route 202 is a branch of U.S. Route 2). However, US 101, rather than a "child" of US 1, is considered a "mainline" U.S. Route.

Generic state highway 34 marker
Marker for New York State Route 17

State highways are the next level in the hierarchy. Each state and territory has its own system for numbering highways, some more systematic than others. Each state also has its own design for its highway markers; the number in a circle is the default sign, but many choose a different design connected to the state, such as an outline of the state with the number inside. Many states also operate a system of county highways.

National Scenic Byway marker
National Forest Scenic Byway marker

Scenic byways can be designated over any classification of road in the United States. There are the National Scenic Byways, National Forest Scenic Byways and Bureau of Land Management Back Country Byways at the national level. Most states have their own system for designating byways, some more systematic than others. Native American tribes may designate byways as well.

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  • Image 1 US Highway 16 (US 16), also called Grand River Avenue for much of its length in the state, was one of the principal roads prior to the post-World War II construction of freeways in the state of Michigan. Before the creation of the United States Numbered Highway System in 1926, the highway had been designated as a state highway numbered M-16. The modern route of Grand River Avenue cuts across the Lower Peninsula in a northwest–southeast fashion from near Grand Rapids to Detroit. Before the late 1950s and early 1960s, US 16 followed other roads between Muskegon and Grand Rapids, and then Grand River Avenue through Lansing to Detroit. In the years immediately preceding the creation of the Interstate Highway System, US 16 was shifted from older roads to newer freeways. Later, it was co-designated as an Interstate. When the gap in the freeway was filled in around Lansing, the US 16 designation was decommissioned in the state. The freeway was solely designated Interstate 96 (I-96) east of Grand Rapids and I-196 west of that city. The original pathway along the Grand River Avenue corridor was an Indian trail, a footpath used by the native population. The first European settlers to the area now known as Michigan also used this trail and in some areas enlarged it for the passage of wagons. In Detroit, Grand River is one of five major avenues (along with Woodward, Michigan, Gratiot, and Jefferson) planned by Judge Augustus Woodward in 1805 that extended from Downtown Detroit in differing radial directions; Grand River Avenue extends northwesterly from the city's downtown. In the middle of the 19th century, the trail was expanded into a plank road that formed the basis for one of the first state trunkline highways as M-16 in the early 20th century. Later, the highway was rerouted to replace M-126 and create M-104. Current segments of the roadway are still part of the state highway system as sections of M-5, M-11, M-43 or business loops off I-96. The portion of Grand River Avenue in Detroit between I-96 and the intersection with Cass Avenue and Middle Street in Downtown Detroit is an unsigned state trunkline, sometimes referred to as Old Business Spur I-96 (Old BS I-96). (Full article...)
    US Highway 16 (US 16), also called Grand River Avenue for much of its length in the state, was one of the principal roads prior to the post-World War II construction of freeways in the state of Michigan. Before the creation of the United States Numbered Highway System in 1926, the highway had been designated as a state highway numbered M-16. The modern route of Grand River Avenue cuts across the Lower Peninsula in a northwest–southeast fashion from near Grand Rapids to Detroit. Before the late 1950s and early 1960s, US 16 followed other roads between Muskegon and Grand Rapids, and then Grand River Avenue through Lansing to Detroit. In the years immediately preceding the creation of the Interstate Highway System, US 16 was shifted from older roads to newer freeways. Later, it was co-designated as an Interstate. When the gap in the freeway was filled in around Lansing, the US 16 designation was decommissioned in the state. The freeway was solely designated Interstate 96 (I-96) east of Grand Rapids and I-196 west of that city.

    The original pathway along the Grand River Avenue corridor was an Indian trail, a footpath used by the native population. The first European settlers to the area now known as Michigan also used this trail and in some areas enlarged it for the passage of wagons. In Detroit, Grand River is one of five major avenues (along with Woodward, Michigan, Gratiot, and Jefferson) planned by Judge Augustus Woodward in 1805 that extended from Downtown Detroit in differing radial directions; Grand River Avenue extends northwesterly from the city's downtown. In the middle of the 19th century, the trail was expanded into a plank road that formed the basis for one of the first state trunkline highways as M-16 in the early 20th century. Later, the highway was rerouted to replace M-126 and create M-104. Current segments of the roadway are still part of the state highway system as sections of M-5, M-11, M-43 or business loops off I-96. The portion of Grand River Avenue in Detroit between I-96 and the intersection with Cass Avenue and Middle Street in Downtown Detroit is an unsigned state trunkline, sometimes referred to as Old Business Spur I-96 (Old BS I-96). (Full article...)
  • Image 2 State Route 52 (SR 52) is a state highway in San Diego County, California, that extends from La Jolla Parkway at Interstate 5 (I-5) in La Jolla, San Diego, to SR 67 in Santee. It is a freeway for its entire length and serves as a major east–west route through the northern part of the city of San Diego. The road connects the major north–south freeways of the county, including I-5, I-805, SR 163, I-15, SR 125, and SR 67. SR 52 passes north of the Rose Canyon Fault before traversing Marine Corps Air Station Miramar (MCAS Miramar). East of Santo Road and west of SR 125, the highway goes through Mission Trails Regional Park, a large open preserve. SR 52 is also known as the Soledad Freeway and the San Clemente Canyon Freeway. Plans for a route between La Jolla and Santee date from 1959, and SR 52 was officially designated in the 1964 state highway renumbering. Construction began in 1966 at the I-5 interchange with Ardath Road leading to La Jolla. It continued with the construction of San Clemente Canyon Road, which was later widened to become SR 52. The freeway was completed east to I-805 in 1970, and was built in two stages from there to Santo Road east of I-15; the last phase was completed in 1988. (Full article...)
    State Route 52 (SR 52) is a state highway in San Diego County, California, that extends from La Jolla Parkway at Interstate 5 (I-5) in La Jolla, San Diego, to SR 67 in Santee. It is a freeway for its entire length and serves as a major east–west route through the northern part of the city of San Diego. The road connects the major north–south freeways of the county, including I-5, I-805, SR 163, I-15, SR 125, and SR 67. SR 52 passes north of the Rose Canyon Fault before traversing Marine Corps Air Station Miramar (MCAS Miramar). East of Santo Road and west of SR 125, the highway goes through Mission Trails Regional Park, a large open preserve. SR 52 is also known as the Soledad Freeway and the San Clemente Canyon Freeway.

    Plans for a route between La Jolla and Santee date from 1959, and SR 52 was officially designated in the 1964 state highway renumbering. Construction began in 1966 at the I-5 interchange with Ardath Road leading to La Jolla. It continued with the construction of San Clemente Canyon Road, which was later widened to become SR 52. The freeway was completed east to I-805 in 1970, and was built in two stages from there to Santo Road east of I-15; the last phase was completed in 1988. (Full article...)
  • Image 3 Interstate 80 (I-80) is a transcontinental Interstate Highway in the United States, stretching from San Francisco, California, to Teaneck, New Jersey. In Iowa, the highway travels west to east through the center of the state. It enters the state at the Missouri River in Council Bluffs and heads east through the southern Iowa drift plain. In the Des Moines metropolitan area, I-80 meets up with I-35 and the two routes bypass Des Moines together. On the northern side of Des Moines, the Interstates split and I-80 continues east. In eastern Iowa, it provides access to the University of Iowa in Iowa City. Northwest of the Quad Cities in Walcott is Iowa 80, the world's largest truck stop. I-80 passes along the northern edge of Davenport and Bettendorf and leaves Iowa via the Fred Schwengel Memorial Bridge over the Mississippi River into Illinois. Before I-80 was planned, the route between Council Bluffs and Davenport, which passed through Des Moines, was vital to the state. Two competing auto trails, the Great White Way and the River-to-River Road, sought to be the best path to connect three of the state's major population centers. The two trails combined in the 1920s and eventually became US Highway 32 (US 32) in 1926. US 6, which had taken the place of US 32, became the busiest highway in the state. In the early 1950s, plans were drawn up for the construction of an Iowa Turnpike, to be the first modern four-lane highway in the state, along the US 6 corridor. Plans for the turnpike were shelved when the Interstate Highway System was created in 1956. (Full article...)
    Interstate 80 (I-80) is a transcontinental Interstate Highway in the United States, stretching from San Francisco, California, to Teaneck, New Jersey. In Iowa, the highway travels west to east through the center of the state. It enters the state at the Missouri River in Council Bluffs and heads east through the southern Iowa drift plain. In the Des Moines metropolitan area, I-80 meets up with I-35 and the two routes bypass Des Moines together. On the northern side of Des Moines, the Interstates split and I-80 continues east. In eastern Iowa, it provides access to the University of Iowa in Iowa City. Northwest of the Quad Cities in Walcott is Iowa 80, the world's largest truck stop. I-80 passes along the northern edge of Davenport and Bettendorf and leaves Iowa via the Fred Schwengel Memorial Bridge over the Mississippi River into Illinois.

    Before I-80 was planned, the route between Council Bluffs and Davenport, which passed through Des Moines, was vital to the state. Two competing auto trails, the Great White Way and the River-to-River Road, sought to be the best path to connect three of the state's major population centers. The two trails combined in the 1920s and eventually became US Highway 32 (US 32) in 1926. US 6, which had taken the place of US 32, became the busiest highway in the state. In the early 1950s, plans were drawn up for the construction of an Iowa Turnpike, to be the first modern four-lane highway in the state, along the US 6 corridor. Plans for the turnpike were shelved when the Interstate Highway System was created in 1956. (Full article...)
  • Image 4 Interstate 696 (I-696) is an east–west auxiliary Interstate Highway in the Metro Detroit region of the US state of Michigan. The state trunkline highway is also known as the Walter P. Reuther Freeway, named for the prominent auto industry union head by the Michigan Legislature in 1971. I-696 is a bypass route, detouring around the city of Detroit through the city's northern suburbs in Oakland and Macomb counties. It starts by branching off I-96 and I-275 at its western terminus in Farmington Hills, and runs through suburbs including Southfield, Royal Oak and Warren before merging into I-94 at St. Clair Shores on the east end. It has eight lanes for most of its length and is approximately 10 miles (16 km) north of downtown Detroit. I-696 connects to other freeways such as I-75 (Chrysler Freeway) and M-10 (Lodge Freeway). Local residents sometimes refer to I-696 as "The Autobahn of Detroit". Planning for the freeway started in the 1950s. Michigan state officials proposed the designation I-98, but this was not approved. Construction started on the first segment in 1961, and the Lodge Freeway was designated Business Spur Interstate 696 (BS I-696) the following year. The western third of the freeway opened in 1963, and the eastern third was completed in January 1979. The central segment was the subject of much controversy during the 1960s and 1970s. Various municipalities along this stretch argued over the routing of the freeway such that the governor locked several officials into a room overnight until they would agree to a routing. Later, various groups used federal environmental regulations to force changes to the freeway. The Orthodox Jewish community in Oak Park was concerned about pedestrian access across the freeway; I-696 was built with a set of parks on overpasses to accommodate their needs. The Detroit Zoo and the City of Detroit also fought components of the freeway design. These concessions delayed the completion of I-696 until December 15, 1989. Since completion, the speed limit was raised from 55 to 70 miles per hour (89 to 113 km/h). In addition, some interchanges were reconfigured in 2006. (Full article...)
    Interstate 696 (I-696) is an east–west auxiliary Interstate Highway in the Metro Detroit region of the US state of Michigan. The state trunkline highway is also known as the Walter P. Reuther Freeway, named for the prominent auto industry union head by the Michigan Legislature in 1971. I-696 is a bypass route, detouring around the city of Detroit through the city's northern suburbs in Oakland and Macomb counties. It starts by branching off I-96 and I-275 at its western terminus in Farmington Hills, and runs through suburbs including Southfield, Royal Oak and Warren before merging into I-94 at St. Clair Shores on the east end. It has eight lanes for most of its length and is approximately 10 miles (16 km) north of downtown Detroit. I-696 connects to other freeways such as I-75 (Chrysler Freeway) and M-10 (Lodge Freeway). Local residents sometimes refer to I-696 as "The Autobahn of Detroit".

    Planning for the freeway started in the 1950s. Michigan state officials proposed the designation I-98, but this was not approved. Construction started on the first segment in 1961, and the Lodge Freeway was designated Business Spur Interstate 696 (BS I-696) the following year. The western third of the freeway opened in 1963, and the eastern third was completed in January 1979. The central segment was the subject of much controversy during the 1960s and 1970s. Various municipalities along this stretch argued over the routing of the freeway such that the governor locked several officials into a room overnight until they would agree to a routing. Later, various groups used federal environmental regulations to force changes to the freeway. The Orthodox Jewish community in Oak Park was concerned about pedestrian access across the freeway; I-696 was built with a set of parks on overpasses to accommodate their needs. The Detroit Zoo and the City of Detroit also fought components of the freeway design. These concessions delayed the completion of I-696 until December 15, 1989. Since completion, the speed limit was raised from 55 to 70 miles per hour (89 to 113 km/h). In addition, some interchanges were reconfigured in 2006. (Full article...)
  • Image 5 I-8 in San Diego, from the San Diego Trolley Interstate 8 (I-8) is an Interstate Highway in the southwestern United States. It runs from the southern edge of Mission Bay at Sunset Cliffs Boulevard in San Diego, California, almost at the Pacific Ocean, to the junction with I-10, just southeast of Casa Grande, Arizona. In California, the freeway travels through the San Diego metropolitan area as the Ocean Beach Freeway and the Mission Valley Freeway before traversing the Cuyamaca Mountains and providing access through the Imperial Valley, including the city of El Centro. Crossing the Colorado River into Arizona, I-8 continues through the city of Yuma across the Sonoran Desert to Casa Grande, in between the cities of Phoenix and Tucson. The first route over the Cuyamaca Mountains was dedicated in 1912, and a plank road served as the first road across the Imperial Valley to Yuma; east of there, the Gila Trail continued east to Gila Bend. These were later replaced by U.S. Route 80 (US 80) across California and part of Arizona, and Arizona State Route 84 (SR 84) between Gila Bend and Casa Grande. The US 80 freeway through San Diego was largely complete by the time it was renumbered as I-8 in the 1964 state highway renumbering; east of San Diego, the US 80 roadway was slowly replaced by I-8 as construction progressed in the Imperial Valley. The Arizona portion of the road was built starting in the 1960s. Several controversies erupted during the construction process; questionable labor practices in Imperial County led to the federal conviction of mobster Jimmy Fratianno, and a U.S. House of Representatives subcommittee found that the Arizona government had mismanaged financial resources. (Full article...)
    I-8 in San Diego, from the San Diego Trolley

    Interstate 8 (I-8) is an Interstate Highway in the southwestern United States. It runs from the southern edge of Mission Bay at Sunset Cliffs Boulevard in San Diego, California, almost at the Pacific Ocean, to the junction with I-10, just southeast of Casa Grande, Arizona. In California, the freeway travels through the San Diego metropolitan area as the Ocean Beach Freeway and the Mission Valley Freeway before traversing the Cuyamaca Mountains and providing access through the Imperial Valley, including the city of El Centro. Crossing the Colorado River into Arizona, I-8 continues through the city of Yuma across the Sonoran Desert to Casa Grande, in between the cities of Phoenix and Tucson.

    The first route over the Cuyamaca Mountains was dedicated in 1912, and a plank road served as the first road across the Imperial Valley to Yuma; east of there, the Gila Trail continued east to Gila Bend. These were later replaced by U.S. Route 80 (US 80) across California and part of Arizona, and Arizona State Route 84 (SR 84) between Gila Bend and Casa Grande. The US 80 freeway through San Diego was largely complete by the time it was renumbered as I-8 in the 1964 state highway renumbering; east of San Diego, the US 80 roadway was slowly replaced by I-8 as construction progressed in the Imperial Valley. The Arizona portion of the road was built starting in the 1960s. Several controversies erupted during the construction process; questionable labor practices in Imperial County led to the federal conviction of mobster Jimmy Fratianno, and a U.S. House of Representatives subcommittee found that the Arizona government had mismanaged financial resources. (Full article...)
  • Image 6 Interstate 205 (I-205) is an auxiliary Interstate Highway in the Portland metropolitan area of Oregon and Washington, United States. The north–south freeway serves as a bypass route of I-5 along the east side of Portland, Oregon, and Vancouver, Washington. It intersects several major highways and serves Portland International Airport. The freeway is 37 miles (60 km) long and connects to I-5 at both of its termini: to the south in Tualatin, Oregon, and to the north in Salmon Creek, Washington. I-205 is named the Veterans Memorial Highway and East Portland Freeway No. 64 in Oregon (see Oregon highways and routes). From Oregon City to Vancouver, the corridor is paralleled by a multi-use bicycle and pedestrian trail, as well as portions of the MAX Light Rail system between Clackamas and northeastern Portland. (Full article...)
    Interstate 205 (I-205) is an auxiliary Interstate Highway in the Portland metropolitan area of Oregon and Washington, United States. The north–south freeway serves as a bypass route of I-5 along the east side of Portland, Oregon, and Vancouver, Washington. It intersects several major highways and serves Portland International Airport.

    The freeway is 37 miles (60 km) long and connects to I-5 at both of its termini: to the south in Tualatin, Oregon, and to the north in Salmon Creek, Washington. I-205 is named the Veterans Memorial Highway and East Portland Freeway No. 64 in Oregon (see Oregon highways and routes). From Oregon City to Vancouver, the corridor is paralleled by a multi-use bicycle and pedestrian trail, as well as portions of the MAX Light Rail system between Clackamas and northeastern Portland. (Full article...)
  • Image 7 US Highway 25 (US 25) was a part of the United States Numbered Highway System in the state of Michigan that ran from the Ohio state line near Toledo and ended at the tip of The Thumb in Port Austin. The general routing of this state trunkline highway took it northeasterly from the state line through Monroe and Detroit to Port Huron. Along this southern half, it followed undivided highways and ran concurrently along two freeways, Interstate 75 (I-75) and I-94. Near the foot of the Blue Water Bridge in Port Huron, US 25 turned north and northwesterly along the Lake Huron shoreline to Port Austin. Created with the initial US Highway System on November 11, 1926, US 25 replaced several previous state highway designations. Some of the preceding highways followed roadways created in the 19th and the early 20th centuries. It initially was only routed as far north as Port Huron; the northern extension to Port Austin happened in 1933. By the end of the 1950s, the entire route was paved. Starting in the early 1960s, segments of I-75 and I-94 were built, and US 25 was shifted to follow them south of Detroit to Port Huron. A business loop was created when the main highway bypassed downtown Port Huron, and then in 1973, the entire designation was removed from the state. The final routing of the highway is still maintained by the state under eight different designations, some unsigned. (Full article...)
    US Highway 25 (US 25) was a part of the United States Numbered Highway System in the state of Michigan that ran from the Ohio state line near Toledo and ended at the tip of The Thumb in Port Austin. The general routing of this state trunkline highway took it northeasterly from the state line through Monroe and Detroit to Port Huron. Along this southern half, it followed undivided highways and ran concurrently along two freeways, Interstate 75 (I-75) and I-94. Near the foot of the Blue Water Bridge in Port Huron, US 25 turned north and northwesterly along the Lake Huron shoreline to Port Austin.

    Created with the initial US Highway System on November 11, 1926, US 25 replaced several previous state highway designations. Some of the preceding highways followed roadways created in the 19th and the early 20th centuries. It initially was only routed as far north as Port Huron; the northern extension to Port Austin happened in 1933. By the end of the 1950s, the entire route was paved. Starting in the early 1960s, segments of I-75 and I-94 were built, and US 25 was shifted to follow them south of Detroit to Port Huron. A business loop was created when the main highway bypassed downtown Port Huron, and then in 1973, the entire designation was removed from the state. The final routing of the highway is still maintained by the state under eight different designations, some unsigned. (Full article...)
  • Image 8 New York State Route 74 (NY 74) and Vermont Route 74 (VT 74) are state highways in the northeastern United States, connected by one of the last remaining cable ferries in North America. Together they extend for 34 miles (55 km) through Essex County, New York, and Addison County, Vermont. NY 74 begins at exit 28 off Interstate 87 (I-87) in the hamlet of Severance in the Adirondack Mountains region of the northern part of New York State. It extends 20.44 miles (32.89 km) to the western shore of Lake Champlain in Ticonderoga. There, the seasonal Fort Ticonderoga–Larrabees Point Ferry carries cars across the state border into Vermont, where VT 74 starts at the lake's eastern shore and terminates 13.26 miles (21.34 km) later at a junction with VT 30 in the town of Cornwall. The ferry connecting the two highways, predating both NY 74 and VT 74, began operation in 1759 on an informal basis. The ferry operation was formalized at the close of the 18th century and upgraded to a cable system in 1946. (Full article...)
    New York State Route 74 (NY 74) and Vermont Route 74 (VT 74) are state highways in the northeastern United States, connected by one of the last remaining cable ferries in North America. Together they extend for 34 miles (55 km) through Essex County, New York, and Addison County, Vermont. NY 74 begins at exit 28 off Interstate 87 (I-87) in the hamlet of Severance in the Adirondack Mountains region of the northern part of New York State. It extends 20.44 miles (32.89 km) to the western shore of Lake Champlain in Ticonderoga. There, the seasonal Fort Ticonderoga–Larrabees Point Ferry carries cars across the state border into Vermont, where VT 74 starts at the lake's eastern shore and terminates 13.26 miles (21.34 km) later at a junction with VT 30 in the town of Cornwall.

    The ferry connecting the two highways, predating both NY 74 and VT 74, began operation in 1759 on an informal basis. The ferry operation was formalized at the close of the 18th century and upgraded to a cable system in 1946. (Full article...)
  • Image 9 M-6, or the Paul B. Henry Freeway, is a 19.7-mile-long (31.7 km) east–west freeway and state trunkline highway in the United States that serves portions of southern Kent and eastern Ottawa counties south of Grand Rapids, Michigan. Although the freeway is named for Paul B. Henry, local residents and the press continue to use the original name, South Beltline as well on occasion. The freeway connects Interstate 196 (I-196) on the west with I-96 on the east. M-6 also provides a connection to U.S. Highway 131 (US 131) in the middle of its corridor while running through several townships on the south side of the Grand Rapids metropolitan area in Western Michigan. Each end is in a rural area while the central section has suburban development along the trunkline. The freeway was originally conceived in the 1960s. It took 32 years to approve, plan, finance, and build the freeway from the time that the state first authorized funding in 1972 to the time of the ribbon-cutting ceremony in 2004 that opened the South Beltline to traffic. The project cost around $700 million or around $35 million per mile (approximately $22 million per kilometer). Initial construction started in November 1997, with the first phase opened in November 2001. The full freeway was opened in November 2004. The first phase of construction was completed in asphalt, while the second and third phases were built in concrete. The project was built with two firsts: the first single-point urban interchange (SPUI; /ˈspuːiː/) in Michigan, and a new technique to apply the pavement markings, embedding them into the concrete to reduce the chance of a snowplow scraping them off. In advance of the opening of the freeway to traffic, the Michigan Department of Transportation (MDOT) allowed the public to walk or bike the South Beltline in an open-house event called the "Southbelt Shuffle". (Full article...)
    M-6, or the Paul B. Henry Freeway, is a 19.7-mile-long (31.7 km) east–west freeway and state trunkline highway in the United States that serves portions of southern Kent and eastern Ottawa counties south of Grand Rapids, Michigan. Although the freeway is named for Paul B. Henry, local residents and the press continue to use the original name, South Beltline as well on occasion. The freeway connects Interstate 196 (I-196) on the west with I-96 on the east. M-6 also provides a connection to U.S. Highway 131 (US 131) in the middle of its corridor while running through several townships on the south side of the Grand Rapids metropolitan area in Western Michigan. Each end is in a rural area while the central section has suburban development along the trunkline.

    The freeway was originally conceived in the 1960s. It took 32 years to approve, plan, finance, and build the freeway from the time that the state first authorized funding in 1972 to the time of the ribbon-cutting ceremony in 2004 that opened the South Beltline to traffic. The project cost around $700 million or around $35 million per mile (approximately $22 million per kilometer). Initial construction started in November 1997, with the first phase opened in November 2001. The full freeway was opened in November 2004. The first phase of construction was completed in asphalt, while the second and third phases were built in concrete. The project was built with two firsts: the first single-point urban interchange (SPUI; /ˈspuːiː/) in Michigan, and a new technique to apply the pavement markings, embedding them into the concrete to reduce the chance of a snowplow scraping them off. In advance of the opening of the freeway to traffic, the Michigan Department of Transportation (MDOT) allowed the public to walk or bike the South Beltline in an open-house event called the "Southbelt Shuffle". (Full article...)
  • Image 10 Interstate 196 (I-196) is an auxiliary Interstate Highway that runs for 80.6 miles (129.7 km) in the US state of Michigan. It is a state trunkline highway that links Benton Harbor, South Haven, Holland, and Grand Rapids. In Kent, Ottawa, and Allegan counties, I-196 is known as the Gerald R. Ford Freeway, or simply the Ford Freeway, after President Gerald Ford, who was raised in Grand Rapids and served Michigan in the House of Representatives for 25 years. This name generally refers only to the section between Holland and Grand Rapids. I-196 changes direction; it is signed as a north–south highway from its southern terminus to the junction with US Highway 31 (US 31) just south of Holland, and as an east–west trunkline from this point to its eastern terminus at an interchange with I-96, its parent highway. There are three business routes related to the main freeway. There are two business loops (BL I-196) and one business spur (BS I-196) that serve South Haven, Holland and the Grand Rapids areas. Another business spur for Muskegon had been designated relative to the I-196 number. The freeway numbered I-196 is the second in the state to bear the number. Originally to be numbered as part of the I-94 corridor in the state, the Benton Harbor–Grand Rapids freeway was given the I-96 number in the 1950s while another Interstate between Muskegon and Grand Rapids was numbered I-196. That I-196 was built in the late 1950s and completed in the early 1960s. The first segment of the current I-196 was opened as I-96 near Benton Harbor in 1962. Michigan officials requested a change in 1963 which reversed the two numbers, and the subsequent segments of freeway opened northward to Holland and from Grand Rapids westward under the current number. The gap between Holland and Grandville was filled in the 1970s, and a section of freeway that runs through downtown Grand Rapids was rebuilt as a wider freeway in 2010. (Full article...)
    Interstate 196 (I-196) is an auxiliary Interstate Highway that runs for 80.6 miles (129.7 km) in the US state of Michigan. It is a state trunkline highway that links Benton Harbor, South Haven, Holland, and Grand Rapids. In Kent, Ottawa, and Allegan counties, I-196 is known as the Gerald R. Ford Freeway, or simply the Ford Freeway, after President Gerald Ford, who was raised in Grand Rapids and served Michigan in the House of Representatives for 25 years. This name generally refers only to the section between Holland and Grand Rapids. I-196 changes direction; it is signed as a north–south highway from its southern terminus to the junction with US Highway 31 (US 31) just south of Holland, and as an east–west trunkline from this point to its eastern terminus at an interchange with I-96, its parent highway. There are three business routes related to the main freeway. There are two business loops (BL I-196) and one business spur (BS I-196) that serve South Haven, Holland and the Grand Rapids areas. Another business spur for Muskegon had been designated relative to the I-196 number.

    The freeway numbered I-196 is the second in the state to bear the number. Originally to be numbered as part of the I-94 corridor in the state, the Benton Harbor–Grand Rapids freeway was given the I-96 number in the 1950s while another Interstate between Muskegon and Grand Rapids was numbered I-196. That I-196 was built in the late 1950s and completed in the early 1960s. The first segment of the current I-196 was opened as I-96 near Benton Harbor in 1962. Michigan officials requested a change in 1963 which reversed the two numbers, and the subsequent segments of freeway opened northward to Holland and from Grand Rapids westward under the current number. The gap between Holland and Grandville was filled in the 1970s, and a section of freeway that runs through downtown Grand Rapids was rebuilt as a wider freeway in 2010. (Full article...)
  • Image 11 M-553 is a north–south state trunkline highway in the Upper Peninsula (UP) of the US state of Michigan. It connects M-35 near Gwinn with the Marquette Bypass, an expressway carrying US Highway 41 (US 41) and M-28 in Marquette. M-553 connects Marquette with Marquette Sawyer Regional Airport at the unincorporated community of K.I. Sawyer, the former site of a US Air Force base, in the Sands Plains area of Marquette County. The intersection with County Road 480 (CR 480) in Sands Township, known locally as the Crossroads, is the site of several businesses. North of this location, M-553 runs through some hilly terrain around a local ski hill. The trunkline was originally County Road 553 (CR 553) in Marquette County. CR 553 dates back to the 1930s, was fully paved in the 1940s, and a segment of the roadway was relocated in the 1950s. During the early 1990s, the City of Marquette extended one of their streets, McClellan Avenue, southward to connect to CR 553. The county road was transferred from the Marquette County Road Commission (MCRC) to the jurisdiction of the Michigan Department of Transportation (MDOT) on October 1, 1998. MDOT assigned most of the former county road the M-553 designation after the transfer was complete. One section that was less than a mile (about 1.4 km) was given the M-554 designation. This related trunkline was unsigned by the state with only city street signs to indicate its existence. In 2005, control of various roadways was exchanged between the City of Marquette and MDOT, and M-553 was extended through the city. At the same time, M-554 was turned over to the city's jurisdiction. (Full article...)
    M-553 is a north–south state trunkline highway in the Upper Peninsula (UP) of the US state of Michigan. It connects M-35 near Gwinn with the Marquette Bypass, an expressway carrying US Highway 41 (US 41) and M-28 in Marquette. M-553 connects Marquette with Marquette Sawyer Regional Airport at the unincorporated community of K.I. Sawyer, the former site of a US Air Force base, in the Sands Plains area of Marquette County. The intersection with County Road 480 (CR 480) in Sands Township, known locally as the Crossroads, is the site of several businesses. North of this location, M-553 runs through some hilly terrain around a local ski hill.

    The trunkline was originally County Road 553 (CR 553) in Marquette County. CR 553 dates back to the 1930s, was fully paved in the 1940s, and a segment of the roadway was relocated in the 1950s. During the early 1990s, the City of Marquette extended one of their streets, McClellan Avenue, southward to connect to CR 553. The county road was transferred from the Marquette County Road Commission (MCRC) to the jurisdiction of the Michigan Department of Transportation (MDOT) on October 1, 1998. MDOT assigned most of the former county road the M-553 designation after the transfer was complete. One section that was less than a mile (about 1.4 km) was given the M-554 designation. This related trunkline was unsigned by the state with only city street signs to indicate its existence. In 2005, control of various roadways was exchanged between the City of Marquette and MDOT, and M-553 was extended through the city. At the same time, M-554 was turned over to the city's jurisdiction. (Full article...)
  • Image 12 Brockway Mountain Drive is an 8.8-mile-long (14.2 km) scenic roadway just west of Copper Harbor in the Upper Peninsula of Michigan in the United States. Drivers can access the road from State Highway M-26 on either end near Eagle Harbor to the west or Copper Harbor to the east in the Keweenaw Peninsula. The drive runs along the ridge of Brockway Mountain on the Keweenaw Fault and climbs to 1,320 feet (402 m) above sea level, 720 feet (219 m) above the surface of Lake Superior. Several viewpoints along the route allow for panoramas of Copper Harbor, Lake Superior, and undeveloped woodland. On a clear day, Isle Royale is visible approximately 50 miles (80 km) in distance from the top of the mountain. Brockway Mountain was named for Daniel D. Brockway, one of the pioneer residents of the area. The road was constructed by the county road commission with funding through Depression-era work programs in 1933. It was briefly used as a connection for the parallel state highway after it opened. Since it opened, Brockway Mountain Drive has been recognized nationally and locally in several media outlets for its picturesque qualities, usually in profiles of Keweenaw County, the Upper Peninsula or other scenic drives. (Full article...)
    A graphic representation of the brown wooden sign for Brockway Mountain Drive

    Brockway Mountain Drive is an 8.8-mile-long (14.2 km) scenic roadway just west of Copper Harbor in the Upper Peninsula of Michigan in the United States. Drivers can access the road from State Highway M-26 on either end near Eagle Harbor to the west or Copper Harbor to the east in the Keweenaw Peninsula. The drive runs along the ridge of Brockway Mountain on the Keweenaw Fault and climbs to 1,320 feet (402 m) above sea level, 720 feet (219 m) above the surface of Lake Superior. Several viewpoints along the route allow for panoramas of Copper Harbor, Lake Superior, and undeveloped woodland. On a clear day, Isle Royale is visible approximately 50 miles (80 km) in distance from the top of the mountain.

    Brockway Mountain was named for Daniel D. Brockway, one of the pioneer residents of the area. The road was constructed by the county road commission with funding through Depression-era work programs in 1933. It was briefly used as a connection for the parallel state highway after it opened. Since it opened, Brockway Mountain Drive has been recognized nationally and locally in several media outlets for its picturesque qualities, usually in profiles of Keweenaw County, the Upper Peninsula or other scenic drives. (Full article...)
  • Image 13 State Route 522 (SR 522) is a state highway in the U.S. state of Washington that serves the Seattle metropolitan area. Approximately 25 miles (40 km) long, it connects the city of Seattle to the northeastern suburbs of Kenmore, Bothell, Woodinville, and Monroe. Its western half is primarily an arterial street, named Lake City Way and Bothell Way, that follows the northern shore of Lake Washington; the eastern half is a grade-separated freeway that runs between Woodinville and Monroe. SR 522 connects several of the metropolitan area's major highways, including Interstate 5 (I-5), I-405, SR 9, and U.S. Route 2 (US 2). The present-day route of SR 522 was built in stages between 1907 and 1965, beginning with the Red Brick Road from Seattle to Bothell, then part of the Pacific Highway and later US 99. The road later became a branch of Primary State Highway 2 (PSH 2) in 1937, and was extended east to Redmond and North Bend. A branch of the Stevens Pass Highway was built to connect PSH 2 in Bothell and Monroe in 1965, and was incorporated into SR 202 after it was designated in 1964. The Bothell–Monroe highway was re-designated as part of SR 522 in 1970, leaving SR 202 on the Bothell–North Bend highway. (Full article...)
    State Route 522 (SR 522) is a state highway in the U.S. state of Washington that serves the Seattle metropolitan area. Approximately 25 miles (40 km) long, it connects the city of Seattle to the northeastern suburbs of Kenmore, Bothell, Woodinville, and Monroe. Its western half is primarily an arterial street, named Lake City Way and Bothell Way, that follows the northern shore of Lake Washington; the eastern half is a grade-separated freeway that runs between Woodinville and Monroe. SR 522 connects several of the metropolitan area's major highways, including Interstate 5 (I-5), I-405, SR 9, and U.S. Route 2 (US 2).

    The present-day route of SR 522 was built in stages between 1907 and 1965, beginning with the Red Brick Road from Seattle to Bothell, then part of the Pacific Highway and later US 99. The road later became a branch of Primary State Highway 2 (PSH 2) in 1937, and was extended east to Redmond and North Bend. A branch of the Stevens Pass Highway was built to connect PSH 2 in Bothell and Monroe in 1965, and was incorporated into SR 202 after it was designated in 1964. The Bothell–Monroe highway was re-designated as part of SR 522 in 1970, leaving SR 202 on the Bothell–North Bend highway. (Full article...)
  • Image 14 New York State Route 308 (NY 308) is a short state highway, 6.19 miles (9.96 km) in length, located entirely in northern Dutchess County, in the U.S. state of New York. It is a major collector road through a mostly rural area, serving primarily as a shortcut for traffic from the two main north–south routes in the area, U.S. Route 9 (US 9) and NY 9G, to get to NY 199 and the Taconic State Parkway. The western end of NY 308 is located within Rhinebeck's historic district, a 2.6-square-mile (6.7 km2) historic district comprising 272 historical structures. The highway passes near the Dutchess County Fairgrounds, several historical landmarks, and briefly parallels the Landsman Kill. Artifacts found near Lake Sepasco, near NY 308's eastern terminus at Rock City, date to about 1685, when the Sepasco Native Americans built the Sepasco Trail from the Hudson River, eastward through modern-day Rhinebeck (then Sepasco or Sepascoot) to the lake, following roughly NY 308 and its side roads. The trail remained until 1802, when part of the Ulster and Delaware Turnpike—also known as the Salisbury Turnpike—was chartered over the trail and extended from Salisbury, Connecticut, to the Susquehanna River at or near the Town of Jericho (now Bainbridge). (Full article...)
    New York State Route 308 (NY 308) is a short state highway, 6.19 miles (9.96 km) in length, located entirely in northern Dutchess County, in the U.S. state of New York. It is a major collector road through a mostly rural area, serving primarily as a shortcut for traffic from the two main north–south routes in the area, U.S. Route 9 (US 9) and NY 9G, to get to NY 199 and the Taconic State Parkway. The western end of NY 308 is located within Rhinebeck's historic district, a 2.6-square-mile (6.7 km2) historic district comprising 272 historical structures. The highway passes near the Dutchess County Fairgrounds, several historical landmarks, and briefly parallels the Landsman Kill.

    Artifacts found near Lake Sepasco, near NY 308's eastern terminus at Rock City, date to about 1685, when the Sepasco Native Americans built the Sepasco Trail from the Hudson River, eastward through modern-day Rhinebeck (then Sepasco or Sepascoot) to the lake, following roughly NY 308 and its side roads. The trail remained until 1802, when part of the Ulster and Delaware Turnpike—also known as the Salisbury Turnpike—was chartered over the trail and extended from Salisbury, Connecticut, to the Susquehanna River at or near the Town of Jericho (now Bainbridge). (Full article...)
  • Image 15 Interstate 805 (I-805) is a major north–south auxiliary Interstate Highway in Southern California. It is a bypass auxiliary route of I-5, running roughly through the center of the Greater San Diego region from San Ysidro (part of the city of San Diego) near the Mexico–U.S. border to near Del Mar. The southern terminus of I-805 at I-5 in San Ysidro is less than 1 mi (1.6 km) north of the Mexican border. I-805 then traverses the cities of Chula Vista and National City before reentering San Diego. The freeway passes through the San Diego neighborhoods of North Park, Mission Valley, Clairemont, and University City before terminating at I-5 in the Sorrento Valley neighborhood near the Del Mar city limit. Planning for I-805 began in 1956, and the route was officially designated in 1959 before it was renumbered in the 1964 state highway renumbering. Starting in 1967, the freeway was built in phases, with the northern part of the freeway finished before the southern part. I-805 was completed and open to traffic in 1975. Named the Jacob Dekema Freeway after the longtime head of the regional division of the California Department of Transportation (Caltrans), I-805 has been frequently cited for its complex engineering and architecture, including near I-8 on the Mission Valley Viaduct. Since then, several construction projects have taken place, including the construction of carpool lanes. (Full article...)
    Interstate 805 (I-805) is a major north–south auxiliary Interstate Highway in Southern California. It is a bypass auxiliary route of I-5, running roughly through the center of the Greater San Diego region from San Ysidro (part of the city of San Diego) near the Mexico–U.S. border to near Del Mar. The southern terminus of I-805 at I-5 in San Ysidro is less than 1 mi (1.6 km) north of the Mexican border. I-805 then traverses the cities of Chula Vista and National City before reentering San Diego. The freeway passes through the San Diego neighborhoods of North Park, Mission Valley, Clairemont, and University City before terminating at I-5 in the Sorrento Valley neighborhood near the Del Mar city limit.

    Planning for I-805 began in 1956, and the route was officially designated in 1959 before it was renumbered in the 1964 state highway renumbering. Starting in 1967, the freeway was built in phases, with the northern part of the freeway finished before the southern part. I-805 was completed and open to traffic in 1975. Named the Jacob Dekema Freeway after the longtime head of the regional division of the California Department of Transportation (Caltrans), I-805 has been frequently cited for its complex engineering and architecture, including near I-8 on the Mission Valley Viaduct. Since then, several construction projects have taken place, including the construction of carpool lanes. (Full article...)
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  • Image 1 Maryland Route 313 (MD 313) is a state highway located on the Eastern Shore of Maryland in the United States. The 75.72-mile (121.86 km) route runs from U.S. Route 50 (US 50) in Mardela Springs, Wicomico County, north to MD 213 and MD 290 in Galena, Kent County. It is predominantly a rural two-lane undivided road that runs through agricultural areas a short distance west of the Delaware state line, with the exception of a four-lane divided bypass of Denton that is concurrent with MD 404. MD 313 serves many communities, including Sharptown, Eldorado, Federalsburg, Denton, Greensboro, Goldsboro, Barclay, Sudlersville, Millington, and Massey. The route intersects many major roads, including MD 54 in Mardela Springs, MD 404 in the Denton area, MD 302 in Barclay, MD 300 in Sudlersville, and US 301 near Massey. The designation MD 313 was first used in 1927 for the road running from Eldorado to Galena, while the portion south to Mardela Springs was designated a part of US 213. By 1933, the route was extended to Mardela Springs following a realignment of US 213. MD 313 was rerouted to bypass Ingleside in 1949 and Greensboro in 1950. The route was moved to its current alignment between Federalsburg and Denton in 1954, replacing what had been briefly designated MD 322 between Federalsburg and Andersontown. The former alignment is now Auction Road and American Corner Road (formerly designated MD 630) and MD 16. The route bypassed Federalsburg in 1964. MD 313 was moved to a one-way pair in Denton along with MD 404 in 1972. In 1987, MD 313 and MD 404 were moved onto the four-lane divided bypass of the town. The original routing of MD 313 in Denton is designated MD 619. The divided highway in the Denton area was extended further south in the early 2000s. The remaining two-lane portions of MD 313 that are concurrent with MD 404 are slated to be upgraded to a four-lane divided highway to provide relief to beach traffic along MD 404, a part of the main route between the Chesapeake Bay Bridge and the Delaware Beaches. (Full article...)
    Maryland Route 313 (MD 313) is a state highway located on the Eastern Shore of Maryland in the United States. The 75.72-mile (121.86 km) route runs from U.S. Route 50 (US 50) in Mardela Springs, Wicomico County, north to MD 213 and MD 290 in Galena, Kent County. It is predominantly a rural two-lane undivided road that runs through agricultural areas a short distance west of the Delaware state line, with the exception of a four-lane divided bypass of Denton that is concurrent with MD 404. MD 313 serves many communities, including Sharptown, Eldorado, Federalsburg, Denton, Greensboro, Goldsboro, Barclay, Sudlersville, Millington, and Massey. The route intersects many major roads, including MD 54 in Mardela Springs, MD 404 in the Denton area, MD 302 in Barclay, MD 300 in Sudlersville, and US 301 near Massey.

    The designation MD 313 was first used in 1927 for the road running from Eldorado to Galena, while the portion south to Mardela Springs was designated a part of US 213. By 1933, the route was extended to Mardela Springs following a realignment of US 213. MD 313 was rerouted to bypass Ingleside in 1949 and Greensboro in 1950. The route was moved to its current alignment between Federalsburg and Denton in 1954, replacing what had been briefly designated MD 322 between Federalsburg and Andersontown. The former alignment is now Auction Road and American Corner Road (formerly designated MD 630) and MD 16. The route bypassed Federalsburg in 1964. MD 313 was moved to a one-way pair in Denton along with MD 404 in 1972. In 1987, MD 313 and MD 404 were moved onto the four-lane divided bypass of the town. The original routing of MD 313 in Denton is designated MD 619. The divided highway in the Denton area was extended further south in the early 2000s. The remaining two-lane portions of MD 313 that are concurrent with MD 404 are slated to be upgraded to a four-lane divided highway to provide relief to beach traffic along MD 404, a part of the main route between the Chesapeake Bay Bridge and the Delaware Beaches. (Full article...)
  • Image 2 County Route 149 (CR 149) is a 8.69-mile (13.99 km) county route in northern Sullivan County, New York, in the United States. The route runs from an intersection with New York State Route 52 (NY 52) in the Callicoon community of Youngsville to an intersection with CR 178 in the Rockland community of Livingston Manor. CR 149 was originally designated as New York State Route 284 in 1930. (Full article...)

    County Route 149 (CR 149) is a 8.69-mile (13.99 km) county route in northern Sullivan County, New York, in the United States. The route runs from an intersection with New York State Route 52 (NY 52) in the Callicoon community of Youngsville to an intersection with CR 178 in the Rockland community of Livingston Manor. CR 149 was originally designated as New York State Route 284 in 1930. (Full article...)
  • Image 3 K-20 is a 37.21-mile-long (59.88 km) west–east state highway in the northeastern part of the U.S. state of Kansas. It connects U.S. Route 75 (US-75) in the Kickapoo Nation Indian Reservation with K-7 southwest of Troy. Along the way, K-20 intersects several major highways, including U.S. Route 159 in Horton, and overlaps U.S. Route 73 from Horton to south of Everest. Northeast of Denton, the highway intersects K-120, which travels north to Severance and Highland. K-20 travels through mostly rural farmlands and is a two-lane highway its entire length. Before state highways were numbered in Kansas, there were auto trails. K-20 overlaps the former Capitol Route near Horton. From Horton to south of Everest, the highway overlaps the former George Washington National Highway and King of Trails. The section from K-120 to Bendena overlaps the former Pikes Peak Ocean to Ocean Highway. K-20 was established by 1928, and at that time ran from US-73E south of Everest east to K-16 south of Troy. On July 11, 1956, it was approved to extend K-20 from US-73 west to US-75 as soon as the county had improved the roadway. Then by August 1956, the county had finished the required projects and it was officially extended. (Full article...)
    K-20 is a 37.21-mile-long (59.88 km) west–east state highway in the northeastern part of the U.S. state of Kansas. It connects U.S. Route 75 (US-75) in the Kickapoo Nation Indian Reservation with K-7 southwest of Troy. Along the way, K-20 intersects several major highways, including U.S. Route 159 in Horton, and overlaps U.S. Route 73 from Horton to south of Everest. Northeast of Denton, the highway intersects K-120, which travels north to Severance and Highland. K-20 travels through mostly rural farmlands and is a two-lane highway its entire length.

    Before state highways were numbered in Kansas, there were auto trails. K-20 overlaps the former Capitol Route near Horton. From Horton to south of Everest, the highway overlaps the former George Washington National Highway and King of Trails. The section from K-120 to Bendena overlaps the former Pikes Peak Ocean to Ocean Highway. K-20 was established by 1928, and at that time ran from US-73E south of Everest east to K-16 south of Troy. On July 11, 1956, it was approved to extend K-20 from US-73 west to US-75 as soon as the county had improved the roadway. Then by August 1956, the county had finished the required projects and it was officially extended. (Full article...)
  • Image 4 Pennsylvania Route 171 (PA 171, also designated by the Pennsylvania Department of Transportation as SR 0171) is a 40.17-mile-long (64.65 km) north–south state highway located in northeast Pennsylvania. The southern terminus of the route is at U.S. Route 6 Business (US 6 Bus.) in Carbondale. The northern terminus is officially at an intersection with US 11, 250 feet (76 m) to the west of Interstate 81 (I-81). PA 171, at its southern end, was once part of the Providence and Carbondale Turnpike, a turnpike which ran along US 6 Bus. from Dickson City to Carbondale and PA 171 from Carbondale to Forest City. The turnpike, chartered in 1851, ran from Scranton until being abandoned in 1889. In 1911, after the Sproul Road Bill was signed, a large segment of PA 171 was designated as Legislative Route 10. This was its designation for several years, and in 1928, the mass amount of state highways in Pennsylvania were designated. (Full article...)
    Pennsylvania Route 171 (PA 171, also designated by the Pennsylvania Department of Transportation as SR 0171) is a 40.17-mile-long (64.65 km) north–south state highway located in northeast Pennsylvania. The southern terminus of the route is at U.S. Route 6 Business (US 6 Bus.) in Carbondale. The northern terminus is officially at an intersection with US 11, 250 feet (76 m) to the west of Interstate 81 (I-81).

    PA 171, at its southern end, was once part of the Providence and Carbondale Turnpike, a turnpike which ran along US 6 Bus. from Dickson City to Carbondale and PA 171 from Carbondale to Forest City. The turnpike, chartered in 1851, ran from Scranton until being abandoned in 1889. In 1911, after the Sproul Road Bill was signed, a large segment of PA 171 was designated as Legislative Route 10. This was its designation for several years, and in 1928, the mass amount of state highways in Pennsylvania were designated. (Full article...)
  • Image 5 Route 162 is an unsigned 0.70-mile (1.13 km) long state highway in Lower Township, New Jersey, United States. The highway's designation consists entirely of a bridge on Seashore Road (County Route 626 or CR 626), which is known as Relocated Seashore Road. The southern terminus of the highway is an intersection with County Routes 641 and 626 in Lower Township. After crossing the Cape May Canal, Route 162 terminates at an intersection with County Routes 603 and 626 in Lower Township. Route 162 and County Route 626 date back to the 1850s, when local businessmen and county financial Richard Holmes put together the Cape May Turnpike. The turnpike was chartered in 1854, but construction did not begin until 1857, with completion in April of the next year. The turnpike however, caused a lot of controversy, and struggled to live. For many years, railroads were proposed, becoming possible competition for Holmes, who did not appreciate the idea. The railroad was constructed in 1863, just nine years after the charter of the turnpike syndicate. Route S4C was designated by the New Jersey Legislature in 1929 as a spur of Route 4 (now U.S. Route 9), beginning at Bennett and running south on Seashore Road and Broadway, past Sunset Boulevard to the Delaware Bay. Route S4C was never taken over by the state. However, when the United States Army Corps of Engineers built the Cape May Canal during World War II, Seashore Road was chosen as one of two roads to cross the canal. (The other was Route 4, now Route 109). The Army Corps built a low level bridge close to the pre-canal alignment. The New Jersey Department of Transportation (NJDOT) built a higher bridge in 1971 on a new alignment. (Full article...)
    Route 162 is an unsigned 0.70-mile (1.13 km) long state highway in Lower Township, New Jersey, United States. The highway's designation consists entirely of a bridge on Seashore Road (County Route 626 or CR 626), which is known as Relocated Seashore Road. The southern terminus of the highway is an intersection with County Routes 641 and 626 in Lower Township. After crossing the Cape May Canal, Route 162 terminates at an intersection with County Routes 603 and 626 in Lower Township. Route 162 and County Route 626 date back to the 1850s, when local businessmen and county financial Richard Holmes put together the Cape May Turnpike. The turnpike was chartered in 1854, but construction did not begin until 1857, with completion in April of the next year. The turnpike however, caused a lot of controversy, and struggled to live. For many years, railroads were proposed, becoming possible competition for Holmes, who did not appreciate the idea. The railroad was constructed in 1863, just nine years after the charter of the turnpike syndicate.

    Route S4C was designated by the New Jersey Legislature in 1929 as a spur of Route 4 (now U.S. Route 9), beginning at Bennett and running south on Seashore Road and Broadway, past Sunset Boulevard to the Delaware Bay. Route S4C was never taken over by the state. However, when the United States Army Corps of Engineers built the Cape May Canal during World War II, Seashore Road was chosen as one of two roads to cross the canal. (The other was Route 4, now Route 109). The Army Corps built a low level bridge close to the pre-canal alignment. The New Jersey Department of Transportation (NJDOT) built a higher bridge in 1971 on a new alignment. (Full article...)
  • Image 6 There are currently four business routes of Interstate 69 (I-69) in the US state of Michigan. Designated Business Loop Interstate 69 (BL I-69), they are all former routings of I-69's predecessor highways, US Highway 27 (US 27), M-78 or M-21, in whole or in part. The BL I-69 in Coldwater and the one in Charlotte were both parts of US 27 before the freeway bypassed those two cities in 1967 and the early 1970s, respectively. The BL I-69 through Lansing and East Lansing was previously part of M-78 and Temporary I-69 until it was redesignated in 1987. Before 1984, the loop in Port Huron was originally part of M-21 and was initially a business spur numbered Business Spur Interstate 69 (BS I-69). It was later redesignated when it was extended to run concurrently with that city's BL I-94 which was originally part of I-94's predecessor, US 25. Each business loop follows streets through each city's downtown areas and connects to I-69 on both ends, giving traffic a route through the downtown and back to the freeway. (Full article...)
    There are currently four business routes of Interstate 69 (I-69) in the US state of Michigan. Designated Business Loop Interstate 69 (BL I-69), they are all former routings of I-69's predecessor highways, US Highway 27 (US 27), M-78 or M-21, in whole or in part. The BL I-69 in Coldwater and the one in Charlotte were both parts of US 27 before the freeway bypassed those two cities in 1967 and the early 1970s, respectively. The BL I-69 through Lansing and East Lansing was previously part of M-78 and Temporary I-69 until it was redesignated in 1987. Before 1984, the loop in Port Huron was originally part of M-21 and was initially a business spur numbered Business Spur Interstate 69 (BS I-69). It was later redesignated when it was extended to run concurrently with that city's BL I-94 which was originally part of I-94's predecessor, US 25. Each business loop follows streets through each city's downtown areas and connects to I-69 on both ends, giving traffic a route through the downtown and back to the freeway.
    (Full article...)
  • Image 7 U.S. Route 197 (US 197) is a north–south United States Highway, of which all but 2.76 miles of its 69.93 miles (4.44 of 112.54 km) are within the state of Oregon. The highway starts in rural Wasco County in Central Oregon at an intersection with US 97. US 197 travels north as a continuation of The Dalles-California Highway No. 4 through the cities of Maupin, Tygh Valley, and Dufur to The Dalles. Within The Dalles, the highway becomes concurrent with US 30 and intersects Interstate 84 (I-84) before it crosses over the Columbia River on The Dalles Bridge into Washington. The highway continues through the neighboring city of Dallesport in Klickitat County and terminates at a junction with State Route 14 (SR 14). US 197 was established in 1952 using the existing The Dalles-California Highway, itself created as a part of the initial named Oregon highways in 1917. US 197 traveled from its current northern terminus at Dallesport to US 97 in Maryhill along Primary State Highway 8 (PSH 8) and US 830, successors to the original State Road 8 designated along the corridor in 1907. The Dallesport–Maryhill section was transferred to SR 14 in 1979, but was not recognized by the American Association of State Highway and Transportation Officials (AASHTO) until 2006. (Full article...)
    U.S. Route 197 (US 197) is a north–south United States Highway, of which all but 2.76 miles of its 69.93 miles (4.44 of 112.54 km) are within the state of Oregon. The highway starts in rural Wasco County in Central Oregon at an intersection with US 97. US 197 travels north as a continuation of The Dalles-California Highway No. 4 through the cities of Maupin, Tygh Valley, and Dufur to The Dalles. Within The Dalles, the highway becomes concurrent with US 30 and intersects Interstate 84 (I-84) before it crosses over the Columbia River on The Dalles Bridge into Washington. The highway continues through the neighboring city of Dallesport in Klickitat County and terminates at a junction with State Route 14 (SR 14).

    US 197 was established in 1952 using the existing The Dalles-California Highway, itself created as a part of the initial named Oregon highways in 1917. US 197 traveled from its current northern terminus at Dallesport to US 97 in Maryhill along Primary State Highway 8 (PSH 8) and US 830, successors to the original State Road 8 designated along the corridor in 1907. The Dallesport–Maryhill section was transferred to SR 14 in 1979, but was not recognized by the American Association of State Highway and Transportation Officials (AASHTO) until 2006. (Full article...)
  • Image 8 Maryland Route 198 (MD 198) is a state highway in the U.S. state of Maryland. The highway runs 14.14 miles (22.76 km) from MD 650 near Spencerville east to the entrance of Fort George G. Meade beyond its junction with MD 32. MD 198 connects Laurel in far northern Prince George's County with the northeastern Montgomery County communities of Spencerville and Burtonsville and Maryland City and Fort Meade in western Anne Arundel County. The highway is a four-to-six-lane divided highway between U.S. Route 29 (US 29) in Burtonsville and the Baltimore–Washington Parkway in Maryland City. MD 198 was constructed from US 1 in Laurel west toward Burtonsville in the early 1920s and completed in the late 1920s. Another section was built in Spencerville in the late 1920s; the two segments were connected in the mid-1950s. The Laurel–Fort Meade road was built as MD 602 for military access purposes in the mid-1940s, replacing the original highway between the two locations, MD 216. MD 198 was relocated through Laurel and extended east along MD 602 to Fort Meade in the early 1960s. The first divided highway portion of the highway was part of a relocation at the Interstate 95 (I-95) interchange in the early 1970s. The divided highway was extended west to Burtonsville in the mid-1980s and through Maryland City in the late 1980s. MD 198's eastern end was extended to MD 32 in the early 1990s and then moved again for its interchange with that highway in the early 2000s. The Maryland State Highway Administration (MDSHA) plans to expand the remaining two-lane portions of MD 198 to a divided highway. (Full article...)
    Maryland Route 198 (MD 198) is a state highway in the U.S. state of Maryland. The highway runs 14.14 miles (22.76 km) from MD 650 near Spencerville east to the entrance of Fort George G. Meade beyond its junction with MD 32. MD 198 connects Laurel in far northern Prince George's County with the northeastern Montgomery County communities of Spencerville and Burtonsville and Maryland City and Fort Meade in western Anne Arundel County. The highway is a four-to-six-lane divided highway between U.S. Route 29 (US 29) in Burtonsville and the Baltimore–Washington Parkway in Maryland City.

    MD 198 was constructed from US 1 in Laurel west toward Burtonsville in the early 1920s and completed in the late 1920s. Another section was built in Spencerville in the late 1920s; the two segments were connected in the mid-1950s. The Laurel–Fort Meade road was built as MD 602 for military access purposes in the mid-1940s, replacing the original highway between the two locations, MD 216. MD 198 was relocated through Laurel and extended east along MD 602 to Fort Meade in the early 1960s. The first divided highway portion of the highway was part of a relocation at the Interstate 95 (I-95) interchange in the early 1970s. The divided highway was extended west to Burtonsville in the mid-1980s and through Maryland City in the late 1980s. MD 198's eastern end was extended to MD 32 in the early 1990s and then moved again for its interchange with that highway in the early 2000s. The Maryland State Highway Administration (MDSHA) plans to expand the remaining two-lane portions of MD 198 to a divided highway. (Full article...)
  • Image 9 New York State Route 220 (NY 220) is a 20.81-mile-long (33.49 km) state highway located in Chenango County, New York, in the United States. It is signed as an east–west highway, but its actual routing wanders considerably from north to south as it proceeds across the county. The western terminus of NY 220 is at an intersection with NY 41 near the western county line in the town of Smithville. Its eastern terminus is in the town of Oxford, where it becomes County Route 32 (CR 32) east of the village of Oxford. The stub of NY 220 east of Oxford serves as a signed connection between NY 12 and the New York State Veterans' Home at Oxford located east of the village along the Chenango River. In 1916, the New York State Legislature created Route 8-a, an unsigned legislative route connecting legislative Route 8 in the center of Oxford to the Relief Corps Home by way of the east bank of the Chenango River. The Route 8-a designation was removed in 1921 as part of a partial renumbering of New York's legislative routes. Its former routing became part of NY 220, a new route extending from Smithville Flats to Oxford, in the 1930 renumbering of state highways in New York. NY 220 was rerouted near Oxford in 1982 to follow a new bridge over the Chenango River. The realignment created a short overlap with NY 12 on North Canal Street between the former routing of NY 220 on Main Street and the new river crossing to the north. The 2017 route log erroneously shows that NY 220's eastern terminus is at the home to the junction with NY 12 in Oxford. (Full article...)
    New York State Route 220 (NY 220) is a 20.81-mile-long (33.49 km) state highway located in Chenango County, New York, in the United States. It is signed as an east–west highway, but its actual routing wanders considerably from north to south as it proceeds across the county. The western terminus of NY 220 is at an intersection with NY 41 near the western county line in the town of Smithville. Its eastern terminus is in the town of Oxford, where it becomes County Route 32 (CR 32) east of the village of Oxford. The stub of NY 220 east of Oxford serves as a signed connection between NY 12 and the New York State Veterans' Home at Oxford located east of the village along the Chenango River.

    In 1916, the New York State Legislature created Route 8-a, an unsigned legislative route connecting legislative Route 8 in the center of Oxford to the Relief Corps Home by way of the east bank of the Chenango River. The Route 8-a designation was removed in 1921 as part of a partial renumbering of New York's legislative routes. Its former routing became part of NY 220, a new route extending from Smithville Flats to Oxford, in the 1930 renumbering of state highways in New York. NY 220 was rerouted near Oxford in 1982 to follow a new bridge over the Chenango River. The realignment created a short overlap with NY 12 on North Canal Street between the former routing of NY 220 on Main Street and the new river crossing to the north. The 2017 route log erroneously shows that NY 220's eastern terminus is at the home to the junction with NY 12 in Oxford. (Full article...)
  • Image 10 M-121 is a state trunkline highway in West Michigan. The highway follows Chicago Drive, a local roadway, from Zeeland to Grandville. Chicago Drive itself runs past the M-121 segment on either side from Holland to Wyoming. The roadway passes through rural farmland on a route that runs parallel to Interstate 196 (I-196). M-121 forms the main street through the center of Hudsonville as it runs southwest–northeast. It forms a major street through the unincorporated community of Jenison before M-121 terminates at I-196 in Grandville. The M-121 designation has been used twice before in the state. The first was for a former routing of US Highway 2 (US 2), and the second was for a connection between I-69, I-75/US 23 and Bishop International Airport in the Flint area. Since 2007, M-121 has been used for a portion of the former M-21 in Ottawa County, which was formerly designated as state-maintained "Old M-21". Future plans will reconfigure a section of the current highway from four lanes divided to four lanes undivided. (Full article...)
    M-121 is a state trunkline highway in West Michigan. The highway follows Chicago Drive, a local roadway, from Zeeland to Grandville. Chicago Drive itself runs past the M-121 segment on either side from Holland to Wyoming. The roadway passes through rural farmland on a route that runs parallel to Interstate 196 (I-196). M-121 forms the main street through the center of Hudsonville as it runs southwest–northeast. It forms a major street through the unincorporated community of Jenison before M-121 terminates at I-196 in Grandville.

    The M-121 designation has been used twice before in the state. The first was for a former routing of US Highway 2 (US 2), and the second was for a connection between I-69, I-75/US 23 and Bishop International Airport in the Flint area. Since 2007, M-121 has been used for a portion of the former M-21 in Ottawa County, which was formerly designated as state-maintained "Old M-21". Future plans will reconfigure a section of the current highway from four lanes divided to four lanes undivided. (Full article...)
  • Image 11 State Route 971 (SR 971) is a state highway in the U.S. state of Washington. It runs for 15 miles (24 km) and primarily serves Lake Chelan State Park, with both of its termini at U.S. Route 97 Alternate (US 97A) southwest of Chelan. SR 971 has the highest highway number in the state. The highway traverses Navarre Coulee along the route of a 19th-century road that was later connected to Chelan in the 1910s. Both roads were paved in the 1960s and incorporated into SR 971 when it was established by the state legislature in 1991. (Full article...)

    State Route 971 (SR 971) is a state highway in the U.S. state of Washington. It runs for 15 miles (24 km) and primarily serves Lake Chelan State Park, with both of its termini at U.S. Route 97 Alternate (US 97A) southwest of Chelan. SR 971 has the highest highway number in the state.

    The highway traverses Navarre Coulee along the route of a 19th-century road that was later connected to Chelan in the 1910s. Both roads were paved in the 1960s and incorporated into SR 971 when it was established by the state legislature in 1991. (Full article...)
  • Image 12 Delaware Route 36 (DE 36) is a state highway in Sussex County, Delaware. It runs in a generally northeast–southwest direction from DE 404 in Scotts Corner east to Slaughter Beach, a town along the Delaware Bay. The road runs through the northern portion of Sussex County, passing through rural areas along with Greenwood and Milford. The route intersects DE 16 and U.S. Route 13 (US 13) in Greenwood and US 113, DE 1 Business (DE 1 Bus.), and DE 1 in Milford. DE 36 was built as a state highway in stages during the 1920s and 1930s. The road was designated by 1938 from DE 16 east of Greenwood east to Fort Saulsbury (present-day Slaughter Beach) and was extended west to DE 404 by 1994. (Full article...)
    Delaware Route 36 (DE 36) is a state highway in Sussex County, Delaware. It runs in a generally northeast–southwest direction from DE 404 in Scotts Corner east to Slaughter Beach, a town along the Delaware Bay. The road runs through the northern portion of Sussex County, passing through rural areas along with Greenwood and Milford. The route intersects DE 16 and U.S. Route 13 (US 13) in Greenwood and US 113, DE 1 Business (DE 1 Bus.), and DE 1 in Milford. DE 36 was built as a state highway in stages during the 1920s and 1930s. The road was designated by 1938 from DE 16 east of Greenwood east to Fort Saulsbury (present-day Slaughter Beach) and was extended west to DE 404 by 1994. (Full article...)
  • Image 13 Delaware Route 3 (DE 3) is a state highway northeast of the city of Wilmington in New Castle County, Delaware. The route runs from Lighthouse Road/Hay Road just south of Interstate 495 (I-495) in Edgemoor north to DE 92 in Hanbys Corner. The route passes through the suburban areas of Brandywine Hundred, Bellefonte, and Arden. It intersects I-495 and U.S. Route 13 (US 13) in Edgemoor, US 13 Business (US 13 Bus.) in Bellefonte, and I-95 near Bellevue State Park. DE 3 was built as a state highway during the 1920s and 1930s. By 1968, the route was designated between US 13 (now US 13 Bus.) north to DE 92 on Marsh Road. The route was moved to its current alignment and terminus by 1984. (Full article...)
    Delaware Route 3 (DE 3) is a state highway northeast of the city of Wilmington in New Castle County, Delaware. The route runs from Lighthouse Road/Hay Road just south of Interstate 495 (I-495) in Edgemoor north to DE 92 in Hanbys Corner. The route passes through the suburban areas of Brandywine Hundred, Bellefonte, and Arden. It intersects I-495 and U.S. Route 13 (US 13) in Edgemoor, US 13 Business (US 13 Bus.) in Bellefonte, and I-95 near Bellevue State Park. DE 3 was built as a state highway during the 1920s and 1930s. By 1968, the route was designated between US 13 (now US 13 Bus.) north to DE 92 on Marsh Road. The route was moved to its current alignment and terminus by 1984. (Full article...)
  • Image 14 M-130 was the designation of a former state trunkline highway in the southeastern corner of the US state of Michigan. It ran from a junction with US Highway 23/M-50 (US 23/M-50) northward across the River Raisin and then turned southeasterly along North Custer Road on the north side of the river to Monroe. The highway designation was commissioned in 1929 and used until 1955. M-130 had a spur route that was created in 1938 and lasted until the main highway was removed from the state highway system. Both highways are now under local control. (Full article...)
    M-130 was the designation of a former state trunkline highway in the southeastern corner of the US state of Michigan. It ran from a junction with US Highway 23/M-50 (US 23/M-50) northward across the River Raisin and then turned southeasterly along North Custer Road on the north side of the river to Monroe. The highway designation was commissioned in 1929 and used until 1955. M-130 had a spur route that was created in 1938 and lasted until the main highway was removed from the state highway system. Both highways are now under local control. (Full article...)
  • Image 15 M-76 is a former state trunkline highway designation in the Lower Peninsula of the US state of Michigan. The highway's designation was decommissioned when the last section of it was converted to freeway as a part of the present-day Interstate 75 (I-75). At that time, M-76 extended from US Highway 23 (US 23) near Standish northwesterly to I-75 south of Grayling. Two sections of the route followed freeways with a two-lane highway in between to connect them. The former routing of M-76 through West Branch before that city was bypassed was initially redesignated Business M-76 (Bus. M-76). The highway itself ran through mixed fields and forests bypassing several other towns in the region. First designated by 1919, M-76 initially terminated at Roscommon. It was later extended north through Grayling and west to Kalkaska in the 1920s. A second, disconnected, segment was added to the highway in the 1930s. By the early 1940s, both the disconnected section and the Kalkaska–Grayling were added to M-72. M-76 was converted in stages into a freeway in the late 1960s and early 1970s. When the last segment was completed, the number was removed from the highway, and the freeway was added to I-75. (Full article...)
    M-76 is a former state trunkline highway designation in the Lower Peninsula of the US state of Michigan. The highway's designation was decommissioned when the last section of it was converted to freeway as a part of the present-day Interstate 75 (I-75). At that time, M-76 extended from US Highway 23 (US 23) near Standish northwesterly to I-75 south of Grayling. Two sections of the route followed freeways with a two-lane highway in between to connect them. The former routing of M-76 through West Branch before that city was bypassed was initially redesignated Business M-76 (Bus. M-76). The highway itself ran through mixed fields and forests bypassing several other towns in the region.

    First designated by 1919, M-76 initially terminated at Roscommon. It was later extended north through Grayling and west to Kalkaska in the 1920s. A second, disconnected, segment was added to the highway in the 1930s. By the early 1940s, both the disconnected section and the Kalkaska–Grayling were added to M-72. M-76 was converted in stages into a freeway in the late 1960s and early 1970s. When the last segment was completed, the number was removed from the highway, and the freeway was added to I-75. (Full article...)
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References and notes

  1. ^ "I-49 Missouri-Arkansas Connector Project completed after more than 40 years". Retrieved January 4, 2022.
  2. ^ Strawser, Justin (April 6, 2020). "Graffiti Highway to be closed by owners". The Daily Item. Retrieved April 6, 2020.
  3. ^ Reed, J. (April 6, 2020). "Work Begins on Centralia's Graffiti Highway; State Police Enforce". Skook News. Retrieved April 6, 2020.
  4. ^ Munsun, Jeff (October 3, 2019). "Exit numbers to change on Carson City Freeway beginning this weekend". Carson Now. Retrieved October 3, 2019.
  5. ^ Marusak, Joe (May 31, 2019). "First part of I-77 toll lanes finally opened Saturday. Here's what you need to know". The Charlotte Observer. Retrieved June 1, 2019.
  6. ^ Lindblom, Mike (February 4, 2019). "New tunnel? No problem? It was an easy, light-traffic day Monday on Highway 99". The Seattle Times. Retrieved February 6, 2019.
  7. ^ Smith, Jerry (January 10, 2019). "U.S. 301 Mainline toll road opens Thursday to cheers and jeers". The News Journal. Wilmington, DE. Retrieved January 10, 2019.
  8. ^ "Route 219 extension opens". The Tribune-Democrat. Johnstown, PA. November 21, 2018. Retrieved November 22, 2018.
  9. ^ Campbell, LouAnna (November 7, 2018). "Lindale relief route open, Toll 49 extended from I-20 to US Highway 69, north of Lindale". Tyler Morning Telegraph. Retrieved January 31, 2019.
  10. ^ "Hogan Administration Announces Long-Awaited US 219 Realignment Construction Project in Garrett County" (Press release). Maryland State Highway Administration. October 13, 2018. Retrieved October 13, 2018.
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