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Animation showing the operation of a drawbridge. A drawbridge or draw-bridge is a type of moveable bridge typically at the entrance to a castle or tower surrounded by a moat.In some forms of English, including American English, the word drawbridge commonly refers to all types of moveable bridges, such as bascule bridges, vertical-lift bridges and swing bridges, but this article concerns the ...
A bascule bridge (also referred to as a drawbridge or a lifting bridge) is a moveable bridge with a counterweight that continuously balances a span, or leaf, throughout its upward swing to provide clearance for boat traffic. It may be single- or double-leafed.
Drawbridges listed on the U.S. National Register of Historic Places. In American English, the term drawbridge refers to any type of movable/moveable bridge. This category includes both functioning drawbridges and ones whose draw span is no longer able to open.
In American English, the term is synonymous with drawbridge, and the latter is the common term, but drawbridge can be limited to the narrower, historical definition used in some other forms of English, in which drawbridge refers to only a specific type of moveable bridge often found in castles.
The Cortland Street Drawbridge (originally known as the Clybourn Place drawbridge) [4] over the Chicago River is the original Chicago-style fixed-trunnion bascule bridge, designed by John Ericson and Edward Wilmann. [3] When it opened in 1902, on Chicago's north side, it was the first such bridge built in the United States.
The bridge opening for barge traffic departing Newtown Creek. Designed by Frederick Zurmuhlen, the Pulaski Bridge is a bascule bridge, a type of drawbridge.Its span crosses Newtown Creek, Long Island Rail Road tracks, and the entrance to the Queens-Midtown Tunnel from south to north.
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Drawbridge (company), based in California, US; The Drawbridge, a quarterly newspaper in London; Drawbridge in Nieuw-Amsterdam, a painting (1883) by Vincent Van Gogh. Drawbridge mentality, a term describing a selfish mentality.