The southbound lanes of Gallows Road from Gatehouse Road to Rt. 50 in Fairfax County are closed for the repair of a water main break.
Falls Church Water Authority was made aware of the 10-inch main break around 10:40 a.m. Sunday.
Officials aren't sure what caused the break.
Crews made adjustments to the valve so that no customers would be without water.
Repairs are expected to be completed by approximately 12:30 a.m.