Excavation and demolition continue at the Locks and Dam 4 near Charleroi during a project run by the U.S. Army Corps of Engineers Pittsburgh District on the Monongahela River in Belle Vernon, Pennsylvania, April 5, 2022. As the excavation and demolition phase nears completion, the project has transitioned to construction, which includes prepping the miter sill for concrete placement, running electrical, finishing the foundation for the bulkhead sill, pouring concrete, anchoring the river wall and more. The Charleroi project began in 2004. The federal government funds half of the project’s cost, while the other half is covered by navigation industry through taxes paid on diesel fuel. (U.S. Army Corps of Engineers Pittsburgh District photo by Michel Sauret)