UPDATE (3:41 p.m.): Route 50 is now clear for travel. Expect residual delays.
(2:14 p.m.): Traffic traveling west on Route 50 is being diverted to Gallows Road. Eastbound traffic is being diverted to Prosperity Avenue, according to Fairfax County emergency alerts.
Route 50 just west of Gallows Road in closed in both directions due to a gas leak caused by construction, according to Fairfax County Police.
Motorists should try to avoid the area. Expect traffic delays.
Washington Gas is enroute. There's no current estimate on when Route 50 will be reopened.