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 ...

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.