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Freeway junction, highway interchange (NA), or motorway junction (UK) A type of road junction linking one controlled-access highway (freeway or motorway) facility to another, to other roads, or to a rest area or motorway service area. Junctions and interchanges are often (but not always) numbered either sequentially, or by distance from one ...
The Four Level Interchange of Arroyo Seco Parkway and Highway 101, looking northeast, in Los Angeles, California. It was the first stack interchange in the world. Highway Interchange between Dolphin Expressway and Palmetto Expressway (Dolphin–Palmetto Interchange) in Greater Miami, Florida, United States
The Four Level Interchange (officially the Bill Keene Memorial Interchange) is the first stack interchange in the world. [1] Completed in 1949 and fully opened in 1953 at the northern edge of Downtown Los Angeles, California, United States, it connects U.S. Route 101 (Hollywood Freeway and Santa Ana Freeway) to State Route 110 (Harbor Freeway and Arroyo Seco Parkway).
Despite the construction of interchanges smoothing flow, 11 of the top 30 most congested stretches of highway in the U.S. are in Los Angeles. [4] Pregerson Interchange in Los Angeles. Alemany Maze; Dosan Ahn Chang Ho Memorial Interchange; East Los Angeles Interchange; El Toro Y, at convergence of I-405 with I-5, in El Toro, California. This was ...
An overpass, called an overbridge or flyover (for a road only) 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. [1] Stack interchanges are made up of several overpasses.
Four-way stops are an effective way to keep drivers safe on the road. According to the N.C. Department of Transportation, on average, converting intersections into four-way stops — also called ...
The first cloverleaf interchange patented in the US was by Arthur Hale, a civil engineer in Maryland, on February 29, 1916. [3] [4]A modified cloverleaf, with the adjacent ramps joined into a single two-way road, was planned in 1927 for the interchange between Lake Shore Drive and Irving Park Road in Chicago, Illinois, but a diamond interchange was built instead.
The eastbound directional onramp is located further south of the overpass and is not pictured. The junction of Saskatchewan Highway 1 (east-west), Saskatchewan Highway 39 (south, part of the CanAm route) and Saskatchewan Highway 301 (north) is an A4 parclo. Highway 1 serves as the freeway, while Highway 39/301 is the arterial road.