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Manchac Swamp Bridge : ウィキペディア英語版 | Manchac Swamp Bridge
The Manchac Swamp Bridge is a twin concrete trestle bridge〔 in the U.S. state of Louisiana. With a total length of it is one of the longest bridges in the world over water. Some claim it is the longest toll-free road bridge in the world. The bridge carries Interstate 55 over the Manchac Swamp in Louisiana, and represents one-third of the highway's approximately 66 miles in Louisiana. Opening in 1979,〔 its piles were driven beneath the swamp and with the cost of the span being $7 million per mile to complete. ==See also==
*List of bridges in the United States *List of longest bridges in the world
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「Manchac Swamp Bridge」の詳細全文を読む
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