Traffic Advisory: Northeast Boundary Tunnel Project Brings Lane Reduction on Mount Olivet Road, NE

June 14, 2019

(Washington, DC) –Beginning the week of June 17, 2019, DC Water's contractor will install construction dewatering wells along Mount Olivet Road as part of the Northeast Boundary Tunnel Project. Work will last for approximately one month and is scheduled Monday through Friday between 7 AM and 7 PM. The wells assist with lowering the groundwater table and relieving stress around the newly constructed shaft.

Travel Restrictions

The eastbound travel lane of Mount Olivet Road, NE will be reduced to one lane of traffic westbound. During this construction period, the lane reduction will remain in place 24 hours per day.
The sidewalk adjacent to the construction site remains closed.

Safety Information

Commuters and pedestrians will notice road signs and/or flagging personnel directing them around the work site. Please obey road crew flaggers and pay attention to signage.
As a result of the construction work, commuters may experience congestion within the 250-foot designated work area. Please do not tailgate, keep a safe distance, and don’t drive distracted.
Please be patient and stay calm. Plan to allow extra time while traveling around the area. Check real-time traffic apps and the NEBT website for updated traffic impacts.

Northeast Boundary Tunnel Project Details

The Northeast Boundary Tunnel is the largest component of the Clean Rivers Project. It begins south of RFK Stadium and will extend north to Rhode Island Avenue, NE and west to 6^th Street, NW. When complete, the approximately five-mile long tunnel will significantly reduce chronic flooding in areas it serves.

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For more information, please contact

Email: dccleanrivers@dcwater.com

24/7 NEBT Hotline: (800) 988-6151

Northeast Boundary Tunnel Project Website: dcwater.com/NEBT

If you would like to receive future notices regarding this project electronically please send an email to the NEBT Outreach Team at dccleanrivers@dcwater.com with your request.

C & O Canal Clean-Up Progressing to Lock 11, Soil Removal Mostly Complete from Locks 12-14

Work is progressing on the clean-up for the C & O Canal which was used as a bypass while the Potomac Interceptor was repaired. Workers are focused on removing sludge between locks 11 and 12. Soil removal is also nearly complete between locks 12 and 14, reaching the canal's clay liner. Workers are now manually removing additional materials in some areas.

Excavators in the canal digging up soil and another excavator removing the soil to a dump truck to be hauled away

2 April, 2026

Soil Removal Nearing Completion between C & O Canal locks 13 and 14, Reaching Clay Liner

DC Water and its contractor have made significant progress on soil removal, reaching the clay liner between locks 13 and 14 of the C & O Canal, which was used as a bypass for wastewater during the Potomac Interceptor repairs.

Work continues to remove sludge between locks 10 and 13, which is expected to be completed by mid- to late-April. The soil will then be removed down to the clay liner as the final step, and the canal reconstructed to meet National Park Service specifications.

Soil Removal Underway with Excavator in Canal

31 March, 2026

Soil Removal Underway on Section of C & O Canal

Today, DC Water and its contractors began removing contaminated soil between locks 13 and 14 in the C & O Canal, which was used as a temporary bypass during the Potomac Interceptor repair effort. Clean-up efforts are ongoing at Lock 10 with work to remove sludge now getting underway between locks 11 and 13.

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