Interstate 526 (I-526) is a 19.56-mile (31.48 km) auxiliary route of I-26, providing a partial beltway around Charleston, South Carolina, in the United States. The route serves several purposes, firstly, as a bypass for through traffic on U.S. Route 17 (US 17) to avoid downtown Charleston, and, secondly, for traffic on I-26 bound for the coastal towns located north and south of Charleston. The route is not yet complete, as the western terminus it is planned for the route to be extended an additional 10 miles (16 km). After the eastern terminus, the roadway continues as a short business route, known as Interstate 526 Business.
New York State Route 878 (NY 878) is an expressway on Long Island in New York state. The route exists in two sections, which both form the Nassau Expressway. NY 878's western terminus is the Belt Parkway and Conduit Avenue (NY 27) in Ozone Park, within southern Queens in New York City. Its southern terminus is at the Atlantic Beach Bridge in Lawrence, within southwestern Nassau County. NY 878 is discontinuous between Farmers Boulevard in Queens and the town of Inwood in Nassau County. The two sections are connected to each other by Rockaway Boulevard and Rockaway Turnpike.
The Las Vegas Beltway is a 50-mile (80 km) beltway route circling three-quarters of the Las Vegas Valley in southern Nevada. The Las Vegas Beltway carries two numerical designations. 11.1 miles (17.9 km) of the highway, from its southern terminus at Interstate 11 (I-11) / U.S. Route 93 (US 93) / US 95 in Henderson west and northwest to I-15, is signed as Interstate 215 (I-215) and maintained by the Nevada Department of Transportation. Clark County Route 215 (CC 215) composes the remaining approximately 38.9 miles (62.6 km) of this semi-circumferential highway, with the county's Department of Public Works responsible for all construction and maintenance. The beltway is a freeway up to Interstate Highway standards in its entirety.
Interstate 540 (I-540) and North Carolina Highway 540 (NC 540) are part of a partially completed beltway around the city of Raleigh in the US state of North Carolina, forming the Raleigh Outer Loop. When complete, the route will completely encircle the city, meeting its parent route of I-40 in two locations.
Interstate 785 (I-785) is an auxiliary Interstate Highway in the US state of North Carolina. As of 2022, it is completed through 6.81 miles (10.96 km) eastern Guilford County, through a concurrency with I-840 along the Greensboro Urban Loop. When completed, it will connect Greensboro to Danville, Virginia, a distance of about 50 miles (80 km).
Interstate 840 (I-840) is a 21.9-mile (35.2 km) auxiliary Interstate Highway and state highway in the U.S. state of North Carolina. It is the northern half of the Greensboro Urban Loop beltway around the city of Greensboro. It connects I-40, I-73, and US 421 in the west with I-40, I-85, and I-785 in the east, and was completed on January 23, 2023.
Interstate 277 (I-277) is an auxiliary Interstate Highway in the US state of North Carolina. It serves as a 4.41-mile (7.10 km) partial loop around Uptown Charlotte.
The Greensboro Urban Loop is a 39.5-mile (63.6 km) Interstate Highway beltway that surrounds Greensboro, North Carolina, United States. The Urban Loop carries I-73, I-85, I-785, I-840, and US 421. It is primarily located within Greensboro city limits, though it often crisscrosses the city line. The right-of-way of the Urban Loop and its interchanges between South Elm-Eugene Street and Huffine Mill Road was annexed by the city of Greensboro in 2005. The final segment to be built, 3.7 miles (6.0 km) between North Elm Street and I-785/US 29, opened to traffic on January 23, 2023.
Arizona State Route 143, also known as SR 143 and the Hohokam Expressway, is a north–south and access-controlled freeway in Maricopa County, Arizona, that runs from a junction with Interstate 10 at 48th Street in Phoenix to McDowell Road. The only other major junction along the 3.93-mile (6.32 km) route is with Loop 202, which is located one half-mile south of McDowell Road and the northern terminus.
The Salem Parkway is an 18.5-mile-long (29.8 km) freeway in the U.S. state of North Carolina, serving the city of Winston-Salem and the town of Kernersville. It is signed as U.S. Route 421 (US 421) for its entire length, though it is also concurrent with US 158 in downtown Winston-Salem and North Carolina Highway 150 (NC 150) between Winston-Salem and Kernersville. Originally known as the East–West Expressway, it was designated as part of Interstate 40 (I-40) and opened in 1958, becoming the first section of Interstate Highway in the state. I-40 was rerouted onto a new alignment which bypassed downtown Winston-Salem and most of Kernersville in 1992, at which time the road was designated Interstate 40 Business, nicknamed Business 40.
The North Carolina Highway System consists of a vast network of Interstate, United States, and state highways, managed by the North Carolina Department of Transportation. North Carolina has the second largest state maintained highway network in the United States because all roads in North Carolina are maintained by either municipalities or the state. Since counties do not maintain roads, there is no such thing as a "county road" within the state.
Interstate 74 (I-74) is a partially completed part of the Interstate Highway System that is planned to run from Davenport, Iowa, to Myrtle Beach, South Carolina. In the US state of North Carolina, I-74 currently exists in three distinct segments; from I-77 at the Virginia state line to US Highway 52 (US 52) near Mount Airy, from I-40 in Winston-Salem to US 220 near Ellerbe, and from US 74 and US 74 Business near Maxton to US 74/North Carolina Highway 41 (NC 41) near Lumberton. I-74 has an extensive concurrency with I-73 from Randleman to Ellerbe in the Piedmont. When completed, I-74 will link the cities of Mount Airy, Winston-Salem, High Point, Rockingham, Laurinburg, and Lumberton.
Interstate 40 (I-40) is a part of the Interstate Highway System that travels 2,556.61 miles (4,114.46 km) from Barstow, California, to Wilmington, North Carolina. In North Carolina, I-40 travels 420.21 miles (676.26 km) across the entirety of the state from the Tennessee state line along the Pigeon River Gorge to U.S. Highway 117 (US 117) and North Carolina Highway 132 (NC 132) in Wilmington. I-40 is the longest Interstate Highway in North Carolina and is the only Interstate to completely span the state from west to east.
An unused highway is a highway or highway ramp that was partially or fully constructed, but went unused or was later closed or part of a future expansion. An unused roadway or ramp may often be referred to as an abandoned road, ghost road, highway to nowhere, stub ramp, ghost ramp, ski jump, stub street, stub-out, or simply stub.
Interstate 73 (I-73) is a partially completed Interstate Highway in the US state of North Carolina, traversing the state from south of Ellerbe to near Summerfield through Asheboro and Greensboro. When completed, it will continue south toward Myrtle Beach, South Carolina, and north to Price, North Carolina at the Virginia-North Carolina border.
U.S. Route 220 is a north–south U.S. highway which travels from Rockingham, North Carolina, to South Waverly, Pennsylvania. In the U.S. state of North Carolina, US 220 travels 123.4 miles (198.6 km) from an intersection with US 1 in Rockingham to the Virginia state line near Price, North Carolina. The highway is an important north–south route in Central North Carolina, connecting Rockingham, Asheboro, Greensboro, and Summerfield. US 220 runs concurrently with Interstate 73 from north of Rockingham to Greensboro, and from Summerfield to Stokesdale; while US 220 runs concurrently with I-74 from Rockingham to Randleman.
U.S. Route 421 (US 421) is part of the United States Numbered Highway System that runs from Fort Fisher, North Carolina to Michigan City, Indiana. In the U.S. state of North Carolina, US 421 travels 328 miles (528 km) from its southern terminus at Fort Fisher to the Tennessee state line near the community of Zionville, North Carolina. US 421 traverses the state from east to west travelling from the coastal plains to Appalachian Mountains. It provides an important connection between the cities of Wilmington, Sanford, Greensboro, Winston-Salem, and Boone. Despite being signed as north–south, much of the routing of US 421 in North Carolina runs in an east–west direction, particularly between Greensboro and the Tennessee state line. Portions of US 421 have been upgraded to freeway standards including the majority of its routing between Sanford and North Wilkesboro.
State Highway 21 (SH 21), also known as Powers Boulevard, is an expressway in El Paso County, in eastern Colorado Springs. SH 21 currently extends from SH 16 in Fountain at its southern end to Interquest Parkway/SH 83 in the north side of Colorado Springs. Extensions to I-25 near North Gate Boulevard are in progress, and extensions south to I-25 near Pikes Peak International Raceway are proposed, and the road is planned to be converted to a freeway in the long-term future.
Interstate 376 Business, commonly referred to as Business Loop 376 or simply Business 376, is a 6.88-mile-long (11.07 km) limited-access business loop of I-376 that is located in Allegheny County, Pennsylvania in the United States. It is situated almost entirely within Moon Township and serves both the township and the cargo and services areas of Pittsburgh International Airport.
Highway revolts have occurred in cities and regions across the United States. In many cities, there remain unused highways, abruptly terminating freeway alignments, and short stretches of freeway in the middle of nowhere, all of which are evidence of larger projects which were never completed. In some instances, freeway revolts have led to the eventual removal or relocation of freeways that had been built.
I-73 / I-840 (Greensboro Urban Loop) near PTI Airport 
