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__NOTOC__ The B&O Railroad Bridge (also called CSXT's Schuylkill River Bridge) is a 1910 swing bridge across the Schuylkill River in the Grays Ferry neighborhood of Philadelphia, Pennsylvania. It carries CSX Philadelphia Subdivision rail lines over the river, and sits upstream from the Passyunk Avenue Bridge and downstream from the Grays Ferry Bridge. ==Construction and history== It is the second bridge to occupy this location. The Baltimore and Ohio Railroad built the original one in the 1880s, after losing a stock takeover battle for its main route into Philadelphia, the Philadelphia, Wilmington and Baltimore Railroad. The winner, the rival Pennsylvania Railroad, gave the B&O until 1884 to build its own southwest line into the city before cutting off access. The new route required a new bridge over the Schuylkill to replace the use of the PW&B's Gray's Ferry Bridge, and so the B&O built a four-span iron through truss bridge with a center swing span to allow boats to pass. It opened on July 11, 1886. (The cost of building the new route, especially the Howard Street Tunnel on the connecting Baltimore Belt Line, led to the B&O's first bankruptcy.) In 1910, the B&O replaced the original bridge with the current one. The three-span through truss bridge with a center swing span was built by the American Bridge Company. During construction, a tugboat grounded on the nearby riverbank and was freed by a B&O locomotive. The bridge was struck by the tugboat ''Radnor'', hauling a barge loaded with oleum, on March 12, 1924. The bridge was originally protected by a mechanical interlocking, which was revised in 1914. It was replaced in 1946 with an electrical interlocking, which also controlled the nearby junction with the Reading Company at Eastwick. 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「B&O Railroad Bridge」の詳細全文を読む スポンサード リンク
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