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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.
In civil engineering, clearance refers to the difference between the loading gauge and the structure gauge in the case of railroad cars or trams, or the difference between the size of any vehicle and the width/height of doors, the width/height of an overpass or the diameter of a tunnel as well as the air draft under a bridge, the width of a lock or diameter of a tunnel in the case of watercraft.
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 elevated illustration, [8] reminiscent of the Miller Highway and some of its descendants, featured partial left lane ramps, a highway running across the width a populated boulevard, almost building-to-building, a local traffic lanes underneath the highway. The report also includes a picture of the then-recently constructed Gowanus Parkway ...
Local environmental advocates, who have sought to block the overpass’s construction in order to preserve the woodland area, cheered the news, but Hammond’s city engineer Dean Button said the ...
Wildlife overpass on Trans-Canada Highway in Banff National Park Using a variety of techniques to monitor the crossings since the early 1980s, scientists report that 10 species of large mammals (including deer, elk, black bear, grizzly bear , mountain lion, wolf, moose, and coyote ) have used the 24 crossings in Banff a total of 84,000 times as ...
The overpass's $30 million cost (equivalent to $41 million in 2023 dollars [63]) was funded mostly by Microsoft, along with contributions from the City of Redmond and federal stimulus funding. [86] [87] Additional projects were funded by the Connecting Washington funding package, which was approved by the state legislature in 2015. An ...
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