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| County Road 557–West Branch Escanaba River Bridge ： ウィキペディア英語版 |
County Road 557–West Branch Escanaba River Bridge
The County Road 557–West Branch Escanaba River Bridge is a bridge located on County Road 557 as it passes over the West Branch of the Escanaba River in Wells Township in Marquette County, Michigan. It was listed on the National Register of Historic Places in 1999.〔
==History==
In 1928, the Michigan State Highway Department determined a bridge was necessary in this location. In March, the department awarded a construction contract to the P.J. Nickel Company of Ironwood, Michigan, valued at $20,016.19. Nickel used a steel superstructure fabricated by the Massillon Bridge and Structural Company of Massillon, Ohio, to finish the bridge.〔
The bridge construction is significant because it was one of the first truly long single-span bridges constructed in the state. Recent (at the time) improvements in I-beam fabrication allowed the construction of steel stringer bridges of extended length. Since construction, the bridge has been essentially unaltered.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「County Road 557–West Branch Escanaba River Bridge」の詳細全文を読む
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