Pike Island Lock and Dam is the fifth lock and dam on the Ohio River, located 84 miles downstream of Pittsburgh. There are two locks, one for commercial barge traffic that's 1,200 feet long by 110 feet wide, and the auxiliary lock is 600 feet long by 110 feet wide. The Pike Island locks were constructed from 1959-63, and were opened in November 1963. The dam was constructed from 1962-65. This structure replaced Locks and Dams 10 and 11, built by the Corps from 1912-16 and 1904-11, respectively. These had smaller lock chambers with old-style wooden wicket dams which were raised and lowered manually by the lock crews to maintain the required navigation depth in the river.