Manchac Swamp bridge

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Manchac Swamp Bridge
Carries Interstate 55
Crosses Manchac Swamp
Locale Louisiana
Maintained by LA DOT
Total length 36,710 meters (120,400 feet)
Opening date 1970's
Maps and aerial photos

The Manchac Swamp Bridge is a bridge in the US state of Louisiana. With a total length of 120,400 feet (36,710m or ~23 miles), it is the second longest bridge in the world by total length (see List of bridges by length). The bridge carries Interstate 55 over the Manchac Swamp in Louisiana, and represents one-third of the highway's approximately 66 miles in Louisiana.

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