Overpass
An overpass, called an overbridge or flyover (for a road only) in the United Kingdom and some other
are made up of several overpasses.History
The world's first railroad flyover was constructed in 1843 by the London and Croydon Railway at Norwood Junction railway station to carry its atmospheric railway vehicles over the Brighton Main Line.[2]
Highway and road
In North American usage, a flyover is a high-level overpass, built above main overpass lanes, or a bridge built over what had been an
A cloverleaf or partial cloverleaf contains some 270 degree loops, which can slow traffic and can be difficult to construct with multiple lanes. Where all such turns are replaced with flyovers (perhaps with some underpasses) only 90 degree turns are needed, and there may be four or more distinct levels of traffic. Depending upon design, traffic may flow in all directions at or near open road speeds (when not congested). For more examples, see
Pedestrian
A pedestrian overpass allows traffic to pass without affecting pedestrian safety.
Railway
Railway overpasses are used to replace
Railroads also use
Gallery
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Overpasses near Barcelona
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Cumberland Highway overpasses a street in Sydney
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Sandgate Flyover, New South Wales, where two main railway lines pass over two dedicated coal lines
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Zheng Qi overpass, Taipei.
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New York State Thruway overpass
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Pedestrian overpass,St. Louis Science Center.
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A road sign on Sion Panvel Highway in India instructing travellers to use flyover for onward journey.
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Overpass under construction over Interstate 5 in Burbank, California, July 2021
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Round overpass in Athens
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Sydney airport taxiway going over a major road.
See also
References
- ^ Henry K. Evans (1950). "Read the ebook Traffic engineering handbook by Institute of Traffic Engineers". ENGINEERING HANDBOOK, Second Edition 1950. New Haven, Connecticut: Institute of Traffic Engineers. Retrieved October 9, 2010.
- ISBN 978-0-7134-0275-9.