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St. Francis River Bridge (Madison, Arkansas) : ウィキペディア英語版 | St. Francis River Bridge (Madison, Arkansas)
The St. Francis River Bridge carries United States Route 70 over the St. Francis River near Madison in St. Francis County, Arkansas, United States. It consists of three Parker through trusses, each long, and a swing bridge span long. With approaches, the bridge has a total length of . The swing span is mounted on a central pier, and is rotated by two workers operating a large hickory handle. The bridge was built in 1932-33, with the swing span design made to accommodate the demands of the United States War Department that the river remain navigable by military vessels. The bridge is one of three swing-span bridges in the state.〔(【引用サイトリンク】title=NRHP nomination for St. Francis River Bridge )〕 It is likely that the swinging mechanism has never been used.〔(【引用サイトリンク】title=Historic Bridges of Arkansas MPS )〕 The bridge was listed on the National Register of Historic Places in 1990.〔 ==See also==
*National Register of Historic Places listings in St. Francis County, Arkansas *List of bridges on the National Register of Historic Places in Arkansas
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