The outage came during one of the busiest travel weeks of the year.
Wednesday's forecast remains uncertain, but it's time to develop escape plans B and C.
Valley Drive between Crestwood Drive and Summit Avenue is shut down.
If you leave early, you won't be sneaking out of town.
Police said some lanes remain closed as crews work to repair the water main break.
Track work also will affect service on the Red and Blue lines.
Three of four lanes are closed.
Weekend lane closings continue as HOT lanes' December opening approaches.
Water main break repaired but work continues in Suitland
The Fairfax County Board of Supervisors has cleared the way for the sale of bonds that will help pay for construction of parking garages at two new Silver Line stations.