McALPINE LOCK CHAMBER AND GUIDEWALL REPLACEMENT

Louisville, Kentucky

This joint venture project for the U.S. Army Corps of Engineers involved the replacement of existing 300-foot and 600-foot locks with a new 1,200-foot lock on the Ohio River as well as the replacement of existing swing and bascule bridges with a high clearance fixed-span highway bridge. Construction also included installation of the culvert valves, upstream and downstream miter gates, installation of updated PLC controls for the lock operating systems, demolition of the existing cofferdam, and construction of the Upstream and Downstream Approach Walls. With over 450,000 cubic yards of concrete and 12 million tons of reinforcing steel, the McAlpine Lock helps relieve a major bottleneck on the Ohio River.