The U.S. Army Corps of Engineers Pittsburgh District constructed a new lock chamber and control tower at the John P. Murtha Locks and Dam in Charleroi, Pennsylvania, as part of the Lower Monongahela River Project. The lock seen in this photo is the old lock, which has been operating since 1931. The U.S. Army Corps of Engineers is modernizing navigation locks and dams across the Ohio River Basin to support commercial industry. Modernization could mean replacing old and aging locks, incorporating new materials, or innovating them with remote lock operations. The Ohio River Basin is an intricate system supporting the nation’s economy with over 2,500 navigable miles, made possible by 50 locking facilities used by towboats and barges to transport an average of 179 million tons of commodities yearly. (U.S. Army Corps of Engineers Pittsburgh District photo by Michel Sauret)