This story was updated 11 a.m., Friday, Nov. 2, 2012.
Water service was restored to the buildings in the 2800 block of Wisconsin Avenue about 10:30 a.m. Friday after an overnight leak in a water line forced Washington Suburbana and Sanitary Commission workers to cut service to find the root of the problem.
The water main break snarled traffic, cut water service to several retail stores and damaged a handful of cars parked in an underground garage, WSSC spokeswoman Kira Lewis said Friday morning.
The leak sent water into an underground garage adjacent to the buildings located in the 2800 to 2900 block of Wisconsin Avenue at Leland Street, Lewis said.
WSSC had completed a rehabilitation project on a pipe in that area and contractors were connecting the new pipe to the system of pipes serving the retail buildings, Lewis said.
"Once we turned on the water main through the new line, there was apparently a leak either in the foundation of the building or a pipe inside the building. We are investigating where the water is coming from."
Two to three feet of water collected in the underground garage at the location, damaging about three to five cars parked there, Lewis said. Crews are pumping water out of that garage this morning.
Water service had been turned off to the stores at 2822, 2824, 2826 and 2828 Wisconsin Avenue. Nearby residents and businesses were not affected, Lewis said.
Wisconsin Avenue's far right lane is still closed to traffic while crews repair the leak, Lewis said.