Phil Delo, a U.S. Army Corps of Engineers Pittsburgh District lock master for the Monongahela River Locks and Dam 3, stands by his collection of model and toy cars in his office in Elizabeth, Pennsylvania, Nov. 29, 2023. Delo is a classic car enthusiast and former mechanic who has been working at the facility in Elizabeth for 22 years. He compares the finesse required to maintain classic cars to the same care needed to maintain the Elizabeth locks, which are more than 100 years old. The U.S. Army Corps of Engineers Pittsburgh District has operated Elizabeth Locks and Dam since 1907. It is the second oldest navigation project in the Pittsburgh District and is planned for removal as early as 2024. Removing the dam will help equalize the pool on the Monongahela River between the Charleroi and Braddock locks and dams, forming a 30-mile stretch of navigable waterway. The expanded pool will benefit the navigation industry by cutting transportation time in half to pass through the region. The dam’s removal is part of the Lower Monongahela River Project, which constructed upgrades at Braddock and Charleroi in preparation for Elizabeth’s removal. (U.S. Army Corps of Engineers Pittsburgh District photo by Michel Sauret)