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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.
Geometric roadway design can be broken into three main parts: alignment, profile, and cross-section. Combined, they provide a three-dimensional layout for a roadway. The alignment is the route of the road, defined as a series of horizontal tangents and curves.
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 ...
The Berkeley I-80 bridge also known as the University Avenue pedestrian bridge and the Berkeley Marina overpass is a 15-foot (4.6 m)-wide bridge spanning the Eastshore Freeway (Interstate 80 /580) in Berkeley, California.
Oct. 14—South Eagle River overpass damaged The Alaska Department of Transportation and Public Facilities is reviewing the heights of all the bridges on the Glenn Highway after a semi hit a ...
A freeway lid (also known as a lidded freeway, freeway cap, highway cap or highway deck) is a type of deck bridge built on top of a controlled-access highway or other roadway. It is commonly used to create new parkland in urban areas, but can also be used to house buildings or other heavy structures like convention centers .
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