Col. Nicholas Melin (center), the U.S. Army Corps of Engineers Pittsburgh District commander, talks to U.S. Sen. Bob Casey of Pennsylvania during a group tour of Montgomery Locks and Dam prior to a groundbreaking ceremony in Monaca, Pennsylvania, Aug. 11, 2023. The Upper Ohio Navigation Project is a multi-billion-dollar construction project that will replace locks at Emsworth, Dashields, and Montgomery locks and dams. The project will replace the auxiliary chambers, measuring 56 feet wide by 360 feet long, with locks measuring 110 feet wide by 600 feet long. (U.S. Army Corps of Engineers Pittsburgh District photo by Michel Sauret)