Montgomery Locks and Dam is a lock and dam on the Ohio River, located 32 miles downstream of Pittsburgh. There are two locks, one for commercial barge traffic that's 600 feet long by 110 feet wide, and the recreational auxiliary lock is 360 feet long by 56 feet wide.
History
Montgomery Locks and Dam was constructed from 1932 to 1936. The locks opened in June 1936. This facility eliminated the original Locks and Dams 4 (built 18981908), 5 (18981907) and 6 (18921904). These three dams were oldstyle wooden wicket dams built by the U.S. Army Corps of Engineers to raise the first shallow navigational pool on this stretch of the Ohio.