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A swing bridge (or swing span bridge) is a movable bridge that can be rotated horizontally around a vertical axis. It has as its primary structural support a vertical locating pin and support ring, usually at or near to its center of gravity, about which the swing span (turning span) can then pivot horizontally as shown in the animated illustration to the right.
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The bridge may be stiffened by the addition of cables that do not bear the primary structural or live loads and so may be relatively light. These also add stability in wind. An example is the 220-meter-long (720 ft) bridge across the river Drac at Lac de Monteynard-Avignonet: this bridge has stabilizing cables below and to the side of the deck.
Pages in category "Swing bridges in the United States" The following 89 pages are in this category, out of 89 total. This list may not reflect recent changes .
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Swing bridge between Manitoulin Island and the mainland, in Little Current, Ontario, was built in 1913 by the Algoma Eastern Railway. Originally usable only by trains, it was modified in the late 1940s to allow road vehicles also to use it. The rail service was abandoned in the 1980s, and the tracks were removed in the 1990s.
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The hydraulic Swing Bridge was designed and paid for by Armstrong, with work beginning in 1873. It was first used for road traffic on 15 June 1876 and opened for river traffic on 17 July 1876. [4] At the time of construction it was the largest swing bridge ever built. The construction cost was £240,000. [5]