Drivers should expect delays on Clara Barton Parkway at the Maryland – DC border on Saturday, Sept 26. One lane will be closed from 7 a.m. to 3 p.m. while DC Water makes repairs as part of ongoing rehabilitation to a section of the Potomac Interceptor sewer line.
The remaining lane will stay open, with flaggers directing traffic in alternating directions. Drivers should slow down, watch for signs ...
DC Water celebrated the christening of Emily today. It’s the second giant tunnel boring machine (TBM) that will help build the 5.5-mile Potomac River Tunnel. The celebration continued with Community Day. Residents and families met Emily and stepped inside the tunnel where she will soon begin digging.
DC CLEAN RIVERS – POTOMAC RIVER TUNNEL PROJECT
Drivers should expect a temporary southbound lane closure on Rock Creek and Potomac Parkway NW between F St and Virginia Ave on Saturday, September 19, and Sunday, September 20, 2026. The closure will be in place from 7 a.m. to 7 p.m. each day, weather permitting.
Beginning this week and continuing through the end of September, DC Water may close one lane temporarily between 10 a.m. to 2 p.m. on Clara Barton Parkway at the Maryland - DC border. The closures are necessary to allow crews to safely deliver materials to the job site and service equipment.
To reduce traffic delays, lane closures will be used as needed throughout the month of September to support ...
DC Water Opens the West Potomac Park Construction Site to the Public for Tours, Activities and More
Ever wonder what it takes to build a 5.5-mile tunnel beneath the nation’s capital? On Saturday, September 19, DC Water invites the community for a rare opportunity to experience one of the District’s largest infrastructure projects up close and underground.
Second of four high-priority repair projects is now complete
DC Water has completed the second of four critical repair projects on the Potomac Interceptor Sewer Line. Crews finished strengthening a 490-foot section of the pipe at Broad Run in Loudoun County today.
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.
Final Gantry Completes Mobile Support Train Behind Mary Stretching More Than 700 Feet
DC Water’s tunnel boring machine Mary may be the muscle behind the Potomac River Tunnel Project, but the gantries that trail behind her form the heart, brains, and guts of the operation. Now crews have lowered and connected the final gantry section, giving Mary the tools and equipment she needs to continue ...
From the first signs of construction on your block to the final steps of yard restoration, DC Water’s Lead Free DC (LFDC) program is answering residents’ top questions about the replacement process.
DC Water invites residents to join the next Lead Free DC virtual community meeting on August 26 from 7 PM – 8 PM.
Ten years ago, DC Water took the bold step of recycling waste from the Blue Plains Advanced Wastewater Treatment Plant into Bloom, a nutrient-rich soil product. Since then, Bloom has become a sustainable option for farmers, landscapers, homeowners, and others across the region. It has also helped create $13.5 million in revenue and savings for DC Water customers.
Bloom uses advanced treatment ...
