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Swing bridges

LC control no.sh2007003771
LC classificationTG420
Topical headingSwing bridges
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See alsoMovable bridges
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Found inWork cat.: Report on the inspection and evaluation of the double swing bridge over the Albemarle & Chesapeake Canal at Great Bridge, Chesapeake, Virginia, 1992.
Transportation Research Thesaurus online, May 27, 2007 (swing bridges; broader term, movable bridges)
Wikipedia, June 18, 2007 (Swing bridge is a bridge that has as its primary structural support a vertical locating pin and support ring at or near to its center, about which it can then pivot horizontally)