A U.S. Army Corps of Engineers Pittsburgh District contractor installs rebar into a dam pier as part of a concrete-repair project at Montgomery Locks and Dam on the Ohio River in Monaca, Pennsylvania, Sept. 17, 2024. The Pittsburgh District is repairing concrete on all 11 dam piers at the Montgomery facility, a process that will take about a year to complete. The dam is nearly 90 years old, meaning the piers require repairs and resurfacing every few years to keep them structurally sound for the long term. The district last completed this type of work at Montgomery in 2022. The concrete pier work also prepares the dam for a major construction project in the coming years. The project will replace the auxiliary chamber, measuring 56 feet wide by 360 feet long, with a new lock measuring 110 feet wide by 600 feet long. The new lock construction is part of the multibillion-dollar Upper Ohio Navigation Project, replacing chambers at the Emsworth and Dashields locks and dams. (U.S. Army Corps of Engineers Pittsburgh District photo by Michel Sauret)