*9/3/26 Updated to reflect changes to the schedule

Beginning this week and continuing through the end of September*, DC Water will temporarily close one lane overnight on Clara Barton Parkway at the Maryland-D.C. border. The closures are necessary to allow crews to safely begin geopolymer work, a concrete-like material, applied inside the sewer line as part of emergency repairs to a section of the Potomac Interceptor. 

Construction work will be paused over the Labor Day weekend, starting at 3 p.m. on Friday, September 4, through Tuesday, September 8, at 7 a.m. During this time, there will be no overnight lane closures.  

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.

This section of pipe was identified as part of a new, ongoing effort to inspect the entire system and prioritize repairs. DC Water moved this area up for emergency repair based on the inspection results. Crews will repair about 400 linear feet of pipe in this area.

Details:

• Location: Clara Barton Parkway at the Maryland-D.C. border
• Time: 8 p.m. and 4 a.m.
• Duration: Beginning this week and continuing through the end of September* (excluding Labor Day weekend). Work could be completed sooner depending on weather.
• Traffic impact: One lane may be closed at a time. Drivers should expect short delays and follow the direction of traffic flaggers.

The repairs are part of the 10-year, $625 million Potomac Interceptor Rehabilitation Project included in DC Water’s Capital Improvement Program to invest in and improve aging water and sewer infrastructure. For more information about the Potomac Interceptor Rehabilitation Project visit: dcwater.com/potomacinterceptor.