Crews also reach a major milestone near Dulles International Airport as the next phase of repairs begins this week

DC Water has completed the first major step in emergency repairs to a 175-foot section of the Potomac Interceptor near Pennyfield Lock in Potomac, Maryland. Crews added a new, stronger lining inside the pipe after inspections found serious wear and damage. The work is part of ongoing repairs to 1,700 linear feet of pipe near Pennyfield Lock. Work began on Friday to apply geopolymer, a concrete-like material, inside the pipe. With the new lining complete, crews are preparing for ...

Beginning this week and continuing through mid-August, DC Water will temporarily close one lane overnight on Clara Barton Parkway at the Maryland-D.C. border. The closures are needed so crews can safely bring in equipment and materials for emergency sewer repairs on part of the Potomac Interceptor.

To reduce traffic delays, most of the work will happen in the evening and overnight when fewer cars are on the road. Only one lane will be closed, and the other lanes will remain open for traffic in both directions.  Drivers should slow down, watch for signs and flaggers, and expect some short delays ...

There is no active spill or overflow. Work to strengthen the pipe to begin soon.

Today, DC Water completed construction on a temporary bypass system as part of sewer repairs on the Potomac Interceptor near Pennyfield Lock in Potomac, Maryland. Crews turned on the pumps and successfully tested the system. With the bypass now ready, it will allow us to begin the emergency repairs inside the pipe by carrying the wastewater around the repair area.