The southbound lanes of York Road at Fairmount Avenue in Towson were closed Wednesday night due to a water main break, said a State Highway Administration spokesman.
Traffic was being diverted to the northbound lanes, said the spokesman, Charlie Gischlar.
As of 3:30 a.m. Thursday, the water main had been repaired, said David Fidler, a spokesman for Baltimore County's Department of Public Works. But a contractor needed to repair the roadway, work that was expected to be completed during the evening rush, he said.
Water had been restored to 15 businesses in the area, he said, including the Carver Center for Arts and Technology.