Plaquemine Lock State Historic Site
57730 Main St.
Plaquemine LA 70764
Lock structure and lock house built in 1909. Visit the museum packed with history of the locks and antique boat pavilion in downtown Plaquemine. The Lock was designed by Colonel George W. Goethals. When completed in 1909, the lock had the highest fresh water lift of any lock in the world –51 feet– and a unique engineering design that utilized a gravity flow principle. The lock served its purpose well by providing a short-cut from the Mississippi River into Louisiana's interior.
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