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The Schoharie Creek Bridge was a New York State Thruway bridge over the Schoharie Creek near Fort Hunter and the Mohawk River in New York State. On April 5, 1987 it collapsed due to bridge scour at the foundations after a record rainfall. The collapse killed ten people. The failure of the Schoharie Creek Bridge motivated improvement in bridge design and inspection procedures.〔Keary H. LeBeau and Sara J. Wadia-Fascetti. (2007). "Fault Tree Analysis of Schoharie Creek Bridge Collapse," ''Journal of Performance of Constructed Facilities,'' Vol. 21, Issue 4, pp. 320-326. () 〕 ==Bridge design and construction== The final design for the bridge was approved in January 1952 by the New York State Department of Transportation (previously named The New York State Department of Public Works). The design described a crossing consisting of five simply supported spans with nominal lengths of , , , , and . The bridge was supported with pier frames along with abutments at each end. The pier frames were constructed of two slightly tapered columns with tie beams. The columns were fixed in place within a lightly reinforced plinth positioned on a shallow, reinforced spread footing. The spread footing was to be protected with a dry layer of riprap.〔Jacob Feld, and Kenneth L. Carper (1997). "Construction Failure" John Wiley and Sons. ISBN 0-471-57477-5, ISBN 978-0-471-57477-4.〕 The superstructure consisted of two longitudinal main girders with transverse floor beams. The skeleton of the bridge deck ( thick) was made up of steel stringers. Construction began on February 11, 1953 by B. Perini and Sons, Inc. 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「Schoharie Creek Bridge collapse」の詳細全文を読む スポンサード リンク
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