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A moveable bridge, or movable bridge, is a bridge that moves to allow passage for boats [1] or barges. [2] 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 ...
The world's longest suspension bridges are listed according to the length of their main span (i.e., the length of suspended roadway between the bridge's towers). The length of the main span is the most common method of comparing the sizes of suspension bridges, often correlating with the height of the towers and the engineering complexity involved in designing and constructing the bridge. [4]
Durkee, Jackson, "World's Longest Bridge Spans", National Steel Bridge Alliance, 24 May 1999 (out of date) The World's Greatest Bridges, Archive.org copy of The Bridge over the Strait of Messina website (out of date and other errors) List of longest spans, Pub Quiz Help (includes bridges that have not yet been completed)
Note: There is no standard way to measure the total length of a bridge. Some bridges are measured from the beginning of the entrance ramp to the end of the exit ramp. Some are measured from shoreline to shoreline. Yet others use the length of the total construction involved in building the bridge.
A roving bridge, [1] changeline bridge, [2] turnover bridge, [3] or snake bridge [4] is a bridge over a canal constructed to allow a horse towing a boat to cross the canal when the towpath changes sides. This often involved unhitching the tow line, but on some canals they were constructed so that there was no need to do this by placing the two ...
It's called Peak Walk at the Glacier 3,000 Resort in the Swiss Alps, and it's the world's first suspension bridge to ever 31 inches wide. 9,800 feet up. That's a bridge
Beam bridge spans rarely exceed 250 feet (76 m) long, as the flexural stresses increase proportionally to the square of the length (and deflection increases proportionally to the 4th power of the length). [28] However, the main span of the Rio–Niteroi Bridge, a box girder bridge, is 300 metres (980 ft). [29]
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