Rendering: Prince William County / PWC Works
Drivers traveling through the intersection of Prince William Parkway and Minnieville Road should prepare for temporary left-turn restrictions and detours beginning Sept. 22, as construction continues on the Prince William Parkway at Minnieville Road Interchange Project.
Most left-turn movements at the intersection will be temporarily restricted to allow crews to keep building the new interchange, according to Prince William County. Through traffic and all right turns will remain open in every direction, and the left turn from northbound Prince William Parkway (toward Old Bridge Road) onto westbound Minnieville Road (toward Dale Boulevard) will also stay open. The county has built a temporary detour road at the intersection to provide an alternate route while the left-turn restrictions are in place.
Detours for affected drivers:
Eastbound Minnieville Road (toward Smoketown Road): Drivers can no longer turn left onto northbound Prince William Parkway (toward Old Bridge Road). Instead, they'll turn left onto Amethyst Avenue, continue to Quartz Avenue, then turn left onto Prince William Parkway.
Westbound Minnieville Road (toward Dale Boulevard): Drivers can no longer turn left onto southbound Prince William Parkway (toward I-95). Instead, they'll turn right onto Elm Farm Road, left onto the Temporary East (Detour) Road, then left onto Prince William Parkway.
Southbound Prince William Parkway (toward I-95): Drivers can no longer turn left onto eastbound Minnieville Road (toward Smoketown Road). Instead, they'll turn left onto the Temporary East (Detour) Road, continue to Elm Farm Road, then turn left onto Minnieville Road.
The county is asking motorists to follow posted detour signs, allow extra travel time, and use caution through the work zone.
The new traffic pattern is part of ongoing construction to replace the existing signalized intersection with a Single Point Urban Interchange, or SPUI, which will carry Prince William Parkway beneath Minnieville Road. County officials say the redesign is meant to improve traffic flow and increase capacity at an intersection that already sees heavy through and turning movement — and to help accommodate future traffic tied to the nearby Quartz District development.
The $81 million project broke ground in May 2026 and is expected to be substantially complete and open to traffic by winter 2028, according to the county.
More information on the project, including construction updates and detour details, is available through PWC Works.
Source: Prince William County Communications Office
Rendering: Prince William County / PWC Works