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New York City is home to over 2,000 bridges and tunnels. Several agencies manage this network of crossings, including the New York City Department of Transportation, Metropolitan Transportation Authority, Port Authority of New York and New Jersey, New York State Department of Transportation and Amtrak. Many of the city's major bridges and tunnels have broken or set records. The Holland Tunnel was the world's first vehicular tunnel when it opened in 1927. The Brooklyn Bridge, Williamsburg Bridge, George Washington Bridge, and Verrazano–Narrows Bridge were the world's longest suspension bridges when opened in 1883,〔 (【引用サイトリンク】 NYC DOT - Brooklyn Bridge )〕 1903,〔 (【引用サイトリンク】 NYC DOT - Williamsburg Bridge )〕 1931,〔 (【引用サイトリンク】 History - George Washington Bridge - The Port Authority of NY & NJ )〕 and 1964〔 (【引用サイトリンク】 Verrazano-Narrows Bridge )〕 respectively. == Bridges == New York's crossings date back to 1693, when its first bridge, known as the King's Bridge, was constructed over Spuyten Duyvil Creek between Manhattan and the Bronx, located in the present-day Kingsbridge neighborhood. The bridge, composed of stone abutments and a timber deck, was demolished in 1917. The oldest crossing still standing is High Bridge, built 1848 to carry the Croton Aqueduct from Manhattan to the Bronx over the Harlem River.〔 (【引用サイトリンク】 NYC DOT - Frequently Asked Questions about Bridges )〕 This bridge was built to carry water to the city as part of the Croton Aqueduct system. Ten bridges and one tunnel serving the city have been awarded some level of landmark status. The Holland Tunnel was designated a National Historic Landmark in 1993 in recognition of its pioneering role as the first mechanically ventilated vehicular underwater tunnel, operating since 1927. The George Washington, High Bridge, Hell Gate, Queensboro, Brooklyn, Manhattan, Macombs Dam, Carroll Street, University Heights ,and Washington bridges have all received landmark status as well.〔 New York features bridges of all lengths and types, carrying vehicular, bicycle, pedestrian, and subway traffic. The George Washington Bridge, spanning the Hudson River between New York City and Fort Lee, New Jersey, is the world's busiest bridge in terms of vehicular traffic.〔(【引用サイトリンク】accessdate=September 13, 2013 )〕 The George Washington, Verrazano–Narrows, and Brooklyn are noted for their architecture, while others are more well known for their functional importance, such as the Williamsburg Bridge with 8 vehicular lanes, 2 subway tracks, a bike lane, and pedestrian walkways. 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「List of bridges and tunnels in New York City」の詳細全文を読む スポンサード リンク
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