As part of the Occoquan River Crossing water main project, Fairfax Water will close Tanyard Hill Road between 1890 Tanyard Hill Road and 411 Union Street in Occoquan, Oct. 2-31, 2023. Affected intersections include:
- Old Bridge Road/Tanyard Hill Road
- Union Street/Ellicott Street
- Union Street/Center Lane
The temporary closure is necessary to accommodate the replacement of approximately 650 feet of 24-inch water main, serving residents of Prince William and Fairfax Counties. View the Traffic Management Plan for detour information.
The project entails Fairfax Water installing two parallel 42-inch water mains underneath the Occoquan River and related improvements designed to increase drinking water transmission capacity, maintain system reliability and enhance availability for existing and future Service Authority customers in eastern Prince William County. The project is a collaboration among three drinking water providers: Fairfax Water, the Service Authority and Virginia American Water. It also involves connecting Fairfax Water’s Griffith Water Treatment Plant to the new 42-inch water mains at the Occoquan River, installing a new water pump at the Griffith Plant and establishing interconnections between existing water mains at Tanyard Hill Road and at the Horner Road Commuter Parking Lot in Prince William County.