Updated at 4:20 p.m. — All of the lanes have reopened, MATOC tweeted.
Southbound lanes of GW Parkway are closed near the intersection with Route 123 in McLean.
The closures are due to a vehicle crash, according to an alert from Fairfax County.
All of the southbound lanes are closed as of 3:24 p.m., according to Virginia 511.
Drivers can expect delays. Traffic is backed up about 1.5 miles, the Metropolitan Area Transportation Operations Coordination Program tweeted.
Crash w/ Injury. GW Parkway SB at VA-123. Fairfax County, VA. All SB lanes are blocked. Delays are approximately 1.5 miles.
— MATOC Alerts (@MATOC) November 5, 2019
Map via Google Maps