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The Broadway Bridge in New York City crosses the Harlem River Ship Canal between Inwood on Manhattan Island and Marble Hill, also originally part of the island, but separated from it by the ship canal; it is still part of the borough of Manhattan. The bridge is named because it carries Broadway, which is designated as US 9 here. The bridge also carries the IRT Broadway – Seventh Avenue Line () above the road. Immediately to the north of the bridge along this line is the Marble Hill – 225th Street station. Before the Harlem River was rerouted, the bridge in the area was named Kings Bridge, crossing the river on the border between Marble Hill and the Bronx. The Boston Post Road and Albany Post Road crossed this bridge. A later bridge, opened on January 1, 1895, spanned the canal. A total of three bridges spanned the canal at this location. The 1895 bridge, a steam-powered swinging bridge, accommodated only highway and pedestrian traffic. It was replaced in 1905 by a bridge that could accommodate for the extension of the IRT subway line into the Bronx. The 1905 Broadway Bridge was also a swinging bridge, but a second deck was added to allow for subway traffic on the upper deck, and pedestrian and highway traffic on the lower deck.〔(【引用サイトリンク】url=http://www.nyc.gov/html/dot/downloads/pdf/dot_bridgereport12.pdf )〕 The 1905 iteration of the Broadway Bridge, that was being replaced by a new double-level structure,〔(new double-level structure )〕 was reused to create the University Heights Bridge. In June 1906, the old bridge was floated down the river and placed on a newly constructed center pier. After all the approaches and other construction were completed, the new University Heights Bridge opened to traffic on January 8, 1908.〔(【引用サイトリンク】title=West 207th Street/University Heights Bridge Over Harlem River )〕 The present Broadway Bridge (opened on July 1, 1962) has a navigable channel wide providing of vertical clearance when the bridge is in the open position. In the down position, the bridge provides of vertical clearance. In 2010, the New York City Department of Transportation, which operates and maintains the bridge, reported an average daily traffic volume in both directions of 37,292. The peak ADT over the Broadway Bridge was 42,555 vehicles in 1990.〔(【引用サイトリンク】url=http://www.nyc.gov/html/dot/downloads/pdf/bridge-traffic-report-10.pdf )〕 ==Public transportation== In addition to carrying the noted above, the Broadway Bridge carries the Bx7 and Bx20 local bus routes operated by MTA New York City Transit, and the BxM1 express bus route operated by the MTA Bus Company. 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「Broadway Bridge (Manhattan)」の詳細全文を読む スポンサード リンク
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