The world’s longest bridges 6- The Manchac Swamp Bridge: It opened in 1979 in the USA and stretches 22.8 miles long. It is a twin, concrete bridge in Louisiana. Previous Next Pages: 1 2 3 4 5 6 7 8 9 10 11 12 pol The world's longest bridges toolanitarin polhaye jahan 2018-06-08 admin