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The Manchac Swamp Bridge

(19) Trestle bridge in Tangipahoa Parish, Louisiana
The Manchac Swamp Bridge is a twin concrete trestle bridge near Manchac in the US state of Louisiana. It carries Interstate 55 and U.S. Route 51 over the Manchac Swamp in Louisiana and represents a third of the highway's approximately 66 miles in Louisiana.
Address: Ponchatoula, LA 70454
Hours: Open ⋅ Closes 12 AM