King Street in both directions is now open near Interstate 395 and park Center Drive following a water main break in the area.
Parts of the busy road had been shut down because of the break.
The break to the 12 inch main happened sometime before 6:30 a.m. Friday.
Repair crews are still on the scene at this time and police said repairs could take a while.
Crews say once the break is located it could take about six hours to fix.
There had been delays to DASH bus service and some school bus service.