A viaduct is a specific type of bridge that consists of a series of arches, piers or columns supporting a long elevated railway or road. Typically a viaduct connects two points of roughly equal elevation, allowing direct overpass across a wide valley, road, river, or other low-lying terrain features and obstacles. The term viaduct is derived from the Latin via meaning "road", and ducere meaning "to lead". It is a 19th-century derivation from an analogy with ancient Roman aqueducts. Like the Roman aqueducts, many early viaducts comprised a series of arches of roughly equal length.
An overpass, called an overbridge or flyover in the United Kingdom and some other Commonwealth countries, is a bridge, road, railway or similar structure that is over another road or railway. An overpass and underpass together form a grade separation. Stack interchanges are made up of several overpasses.
King's Highway 402, commonly referred to as Highway 402 and historically as the Blue Water Bridge Approach, is a 400-series highway in the Canadian province of Ontario that connects the Blue Water Bridge international crossing near Sarnia to Highway 401 in London. It is one of multiple trade links between Ontario and the Midwestern United States. It is four lanes for much of its length, though the approach to the Blue Water Bridge is six lanes.
Interstate 678 (I-678) is a north–south auxiliary Interstate Highway that extends for 14 miles (23 km) through two boroughs of New York City. The route begins at John F. Kennedy International Airport on Jamaica Bay and travels north through Queens and across the East River to the Bruckner Interchange in the Bronx, where I-678 ends and the Hutchinson River Parkway begins.
The George Washington Memorial Parkway, colloquially the G.W. Parkway, is a 25-mile-long (40 km) limited-access parkway that runs along the south bank of the Potomac River from Mount Vernon, Virginia, northwest to McLean, Virginia, and is maintained by the National Park Service (NPS). It is located almost entirely in Northern Virginia, except for a short portion of the parkway northwest of the Arlington Memorial Bridge that passes over Columbia Island in Washington, D.C.
The Clara Barton Parkway is a parkway in the U.S. state of Maryland and the District of Columbia. The highway runs 6.8 miles (10.9 km) from MacArthur Boulevard in Carderock, Maryland, east to Canal Road at the Chain Bridge in Washington. The Clara Barton Parkway is a two- to four-lane parkway that parallels the Potomac River and the Chesapeake and Ohio Canal (C&O) in southwestern Montgomery County, Maryland, and the far western corner of Washington. The parkway provides access to the communities of Cabin John and Glen Echo and several units of the Chesapeake and Ohio Canal National Historical Park. The Maryland portion of the George Washington Memorial Parkway was constructed from Carderock past Interstate 495 (I-495) to Glen Echo in the early to mid-1960s. The parkway was proposed to continue west to Great Falls and east to Georgetown. However, these proposals never came to fruition and the parkway was extended only to the Chain Bridge in the early 1970s. The Maryland portion of the George Washington Memorial Parkway was renamed in 1989 for Clara Barton, the founder of the American Red Cross, and whose original headquarters is located in Glen Echo.
The Claiborne Pell Bridge, commonly known as the Newport Bridge, is a suspension bridge operated by the Rhode Island Turnpike and Bridge Authority that spans the East Passage of the Narragansett Bay in Rhode Island. The bridge, part of RI 138, connects the city of Newport on Aquidneck Island and the Town of Jamestown on Conanicut Island, and is named for longtime Rhode Island U.S. senator Claiborne Pell who lived in Newport. The Pell Bridge is in turn connected to the mainland by the Jamestown Verrazzano Bridge.
Franklin D. Roosevelt East River Drive, commonly known as the FDR Drive, is a controlled-access parkway on the east side of the New York City borough of Manhattan. It starts near South and Broad Streets, just north of the Battery Park Underpass, and runs north along the East River to the 125th Street / Robert F. Kennedy Bridge interchange, where it becomes Harlem River Drive. All of FDR Drive is designated New York State Route 907L (NY 907L), an unsigned reference route.
The M2 is a major highway and metropolitan route in Greater Johannesburg, South Africa. It is named the Francois Oberholzer Freeway. It runs just to the south of the Johannesburg Central Business District eastwards where it connects with the N3 and enters Germiston, ending near its CBD. The north–south M1 intersects with the M2 just to the south-west of the Johannesburg CBD.
The Old Eastern Avenue Bridge consists of two bridges spanning the Don River in Toronto, Ontario, Canada. The north bridge or Gas Line Bridge is a concrete arch bridge built for Consumer's Gas Company and is used by Enbridge Gas to carry a major gas main. The southern Howe truss bridge, similar to Queen Street Viaduct and Sir Isaac Brock Bridge, previously carried traffic on Eastern Avenue but is currently unused.
State Road 404 (SR 404), the Pineda Causeway, is an east–west divided highway currently running from Interstate 95 (I-95) to SR A1A at Patrick Space Force Base, Florida, US. It was opened as a toll road in 1971 and classified as a state road two years later. The tolls were removed in 1990. It was named after Pineda, a former village east of Suntree on U.S. Route 1 (US 1). With interchanges at US 1 (SR 5), South Tropical Trail, and South Patrick Drive (SR 513), the Pineda Causeway is the primary access for Patrick Space Force Base and the southern end of Merritt Island. From US 1 to the eastern terminus, it is part of the Indian River Lagoon Scenic Highway system.
The Pennsylvania Turnpike/Interstate 95 Interchange Project is an ongoing road construction project to built an interchange between Interstate 95 (I-95) and the Pennsylvania Turnpike in Bristol Township, Bucks County, Pennsylvania, in the United States. The $553 million first stage is complete: a pair of flyover ramps–one connecting I-95 northbound with the eastbound turnpike and the other connecting the westbound turnpike with I-95 southbound—that opened in 2018, with some cleanups to connecting roads completed in 2021. Construction of the remaining ramps is expected to begin when funding is available.
The Third Ring Road, or The Third Ring, is a beltway around central Moscow, Russia, located between the Garden Ring in the city centre and the Moscow Ring Road (MKAD).
Memorial Parkway, also known as the Parkway, is a major thoroughfare in Huntsville, Alabama that carries over 100,000 vehicles on average a day. It, in whole or in part, follows U.S. Route 231, U.S. Route 431, U.S. Route 72, and State Route 53 through the Huntsville city limits. It is a limited access road through most of Huntsville city proper, providing exits to the frontage road which allows access to road intersections, as well as businesses and residences along the route. Both the limited access and frontage roads are referred to as Memorial Parkway. Originally constructed to bypass downtown Huntsville and officially opened on December 1, 1955, the highway is the major commercial thoroughfare through Huntsville, a status it has held since the mid-1960s.
Interstate 64 (I-64) is an Interstate Highway in the US state of West Virginia. It travels east–west through the state for 189 miles (304 km) passing by the major towns and cities of Huntington, Charleston, Beckley, and Lewisburg.
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.
The Johnsonville–Porirua Motorway is a motorway in Wellington, New Zealand. The majority of the motorway forms part of State Highway 1, the main route of traffic in and out of the city, with the northernmost 2.1 km (1.3 mi), formerly part of SH 1 until 7 December 2021, designated as State Highway 59. Completed in the 1950s, it was New Zealand's first motorway.
The North–South Motorway is a partially complete motorway traversing the inner western suburbs of Adelaide, from Waterloo Corner in the north to Bedford Park in the south. Progressively constructed in stages since 2010, once complete it will replace the adjacent South Road as Adelaide's main north–south roadway. It will form the central section of the North–South Corridor, being flanked north and south by the Northern Expressway and Southern Expressway, respectively. It is designated part of route M2.
The New Yalu River Bridge, or Korea-China Amnok River Bridge, is a road bridge across the Amnok River between Dandong, Liaoning Province, China, and Sinuiju, North Korea. The cable-stayed bridge, which is 3 kilometers (1.9 mi) long including the supporting roads, is intended as a replacement for the Sino-Korean Friendship Bridge. Construction began in October 2011 and is mostly complete and connected with Xingdan Road, but the project stalled between 2014 and 2019, with work unfinished on the North Korean side. By 2021, construction on the North Korean side has been mostly completed, with the bridge being expected to open soon.
