Continuing critical flood risk reduction upgrades along the American River watershed, Folsom Dam Constructors has been awarded a $10,315,577 contract modification (P00022). The civil works action modifies existing contract W91238-23-C-0010 for ongoing Folsom Dam Wing Dam raises and structural improvements in Folsom, California, bringing the total cumulative face value of the project to $136,038,717.

Contract Details: At A Glance

District Context & Mission Impact

This major dam safety modification is administered by the U.S. Army Corps of Engineers Sacramento District. The Sacramento District oversees flood risk management, water supply storage, and military engineering across California’s Central Valley. Folsom Dam and its associated wing dams, dikes, and auxiliary structures protect more than 500,000 residents throughout the greater Sacramento metropolitan area from catastrophic flooding. Raising the wing dams increases weather resilience and flood storage capacity, allowing water managers to control extreme storm inflows from the Sierra Nevada mountains. Modernizing earthfill wing dams ensures the multi-purpose dam system meets strict modern seismic and hydrological safety standards, protecting lives, infrastructure, and California’s capital city through 2029.

Contractor Spotlight & Industry Context

Based in Pleasanton, California, Folsom Dam Constructors is a specialized joint venture entity bringing together heavy civil engineering and heavy dam construction capabilities. Modifying major dam embankments requires specialized earthmoving fleets, rock placement, concrete structural reinforcement, seepage control installation, and precision earthwork while maintaining continuous reservoir operations. Continuing multi-year contract modifications allows USACE engineering managers to execute sequential construction phases smoothly while adapting to real-world site conditions without delaying critical flood control schedules.