DC CLEAN RIVERS – POTOMAC RIVER TUNNEL PROJECT
Attention drivers. If you use the ramp from Ohio Drive Southwest to I-66, DC Water will be doing construction that requires the temporary closure of one northbound lane beginning as of today, weather permitting. Drivers will still be able to get onto the highway, and the lane will reopen before the evening rush.
Lane Closure Expected to Impact Commuters from DC, Maryland, and Virginia
DC Water will begin slope stabilization work along Canal Road Northwest starting around mid-August and is needed before construction at the site for part of the Potomac River Tunnel. This work will require the closure of one lane and the sidewalk on Canal Rd between Foxhall Rd and the entrance to Georgetown University.
Ramp Remains Closed Pending Further Assessment
DC Water has completed testing of the Rock Creek Main Interceptor—a major sewer line near the P Street NW ramp to Rock Creek and Potomac Parkway—after a sinkhole appeared on Friday. The results showed no significant leaks or structural issues in the sewer line.
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Potomac River Tunnel Project
DC Water will be making two oversized equipment deliveries to support the Potomac River Tunnel Project. This means overnight closures on the 3500 block of Water Street NW—near the Capital Crescent Trail entrance.
The first closure will take place overnight on Tuesday, July 1, and the second on Monday, July 7, weather permitting.
DC Water is advising motorists of an emergency closure to the P Street Northwest Ramp to Rock Creek and Potomac Parkway, due to a sinkhole on the ramp that may compromise the roadway. The closure will begin between 9 p.m. and 11 p.m. tonight until further notice, in order to assess the extent of the void beneath the roadway and near a major sewer line.
CONSTRUCTION ACTIVITY NOTIFICATION - DC CLEAN RIVERS - POTOMAC RIVER TUNNEL PROJECT
DC Water has opened the new portion of the Capital Crescent Trail in Georgetown, serving as a detour around the Potomac River Tunnel Project construction site, west of the aqueduct. The next phase of work involves stabilizing the ground within the site in preparation for upcoming construction activities.
Following a nearly year-long construction effort, DC Water has completed repairs on a nine foot diameter, 140-year old sewer tunnel on 22nd Street Northwest. Construction was done in two phases, with the second phase completed one month ahead of schedule and under budget.
**Advisory is Lifted as of 9:00 p.m., June 13, 2025**
All DC Water customers in the impact area under the precautionary boil water advisory can use tap water for all purposes after following the instructions provided below.
DC Water lifted the precautionary boil water advisory after tests confirmed that drinking water meets all water quality safety standards.
** La advertencia se levanta a partir de las 21:00 del jueves 13 de junio de 2025**
Todos los clientes de DC Water en la zona afectada, bajo la recomendación preventiva de hervir el agua, pueden usar agua del grifo para cualquier propósito después de seguir las instrucciones que se proporcionan a continuación.
