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The P.W. & B. Railroad Bridge was the first bridge over the Susquehanna River, built by the Philadelphia, Wilmington and Baltimore Railroad in 1866, as part of the first mainline railroad between Philadelphia and Baltimore. The bridge was replaced by the Amtrak Susquehanna River Bridge in 1906. ==History== The P.W. & B. began operating its main line in 1838, using a ferry operation to transport railroad cars over the Susquehanna River. Construction of the bridge, which was a wood truss design, began in 1862. The masonry and most of the wooden spans were complete in 1866, but then a tornado severely damaged the wooden components on July 25, 1866. Repairs were quickly made and the first locomotive crossed the bridge on November 20, 1866. The cost of construction, including rebuilding most of the truss portions, was $2.3 million. Passenger trains began service over the bridge on November 26, 1866.〔 The P.W. & B. later replaced the wooden spans with iron spans. A draw span was then installed in the late 1870s.〔 The Pennsylvania Railroad took control of the P.W. & B. in 1881. It built a new bridge from 1904 to 1906.〔 The piers from the P.W. & B. bridge still stand next to the current bridge today. 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「P.W. & B. Railroad Bridge」の詳細全文を読む スポンサード リンク
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