Traffic Advisory: Northeast Boundary Tunnel Shaft Excavation Work to Begin at 4th Street, NE

June 05, 2019

(Washington, DC) – In preparation for construction associated with the DC Water Northeast Boundary Tunnel (NEBT) (dcwater.com/NEBT),  DC Water's contractor will begin staging for shaft excavation activities on 4th Street, NE at the intersection of Rhode Island Avenue, NE. This will require the current work site on 4th Street to be expanded into one lane on Rhode Island Avenue. Subsequently, westbound traffic on Rhode Island Avenue will be reduced from three lanes to two lanes as it moves past the construction site. Once past the intersection at 4th Street, motorists can again utilize three travel lanes. Shaft excavation activities will begin on or about Monday, June 3, 2019.

Work hours will be 7 am to 7 pm, Monday through Friday and will take approximately 1 month to complete. Access to the businesses in the vicinity will remain open during construction activities.

Traffic and Pedestrian Restrictions

Travel Restrictions:

Westbound Rhode Island Avenue, NE - traffic will merge into two-lanes of travel left around the 4th Street, NE construction and then return to three-lane travel immediately past the intersection.

Pedestrian Impacts:

The pedestrian crosswalk across 4th Street, NE at the Rhode Island Avenue, NE intersection will be closed for approximately 1 month. Detour signs will guide pedestrians to safely cross Rhode Island Avenue and the southern intersection of 4th Street.

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.

Additional Information

  • Access to all businesses in the vicinity will remain open during construction activities. Motorists will see flaggers guiding them into the BP Gas Station at the corner of 4th and Rhode Island Avenue, NE if they choose to enter.
  • People who live or work near the affected locations will notice additional construction equipment and personnel as well as noise associated with construction activities.

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 6th Street, NW. When complete, the approximately five-mile long tunnel will significantly reduce chronic flooding in areas it serves.


###

For more information, please contact

Email: dccleanrivers@dcwater.com

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

Northeast Boundary Tunnel Project Website: dcwater.com/NEBT

Latest News

Collapse site with workers inside

DC Mayor Muriel Bowser Visits Site as Crews Make Progress on Repairs

DC Water has successfully reached the damaged section of the Potomac Interceptor, marking a critical step in the ongoing damage assessment and repair efforts. Crews today are manually digging out the affected area, carefully removing sludge, soil, and debris from the collapsed pipe.

Image of the collapse site drained of water

Efforts to isolate the damaged section of pipe are moving forward. Engineers are on site and preparations are underway to permanently install a steel bulkhead gate that will cut off flow to the collapse site in combination with an enhanced bypass pumping system that will continue to divert wastewater around the failure and into the Potomac Interceptor further downstream. Once fully activated, the system will allow contractors to begin stabilizing the area around the break and initiate excavation down to the damaged pipe and rock dam.

Enhanced bypass with pumps and bulkhead gate in position

Potomac Interceptor Collapse Update
Tuesday, February 17, 2026

  • No overflow events impacting surface waters were reported overnight. No overflow events impacting surface waters have been reported since ...

Upcoming Meeting

Board of Directors Meeting

April 24, 2023

Monday 9:00 AM

Announcement

Map of lane closure
Traffic Advisory: Rock Creek and Potomac Parkway NW Lane Closure Beginning Jan 19

Beginning on or about January 19, 2026, weather permitting, DC Water will implement a temporary lane closure on Rock Creek and Potomac Parkway NW b

Latest Blog Post
A helicopter lowers a drill rig to workers on the Potomac River.
DC Water begins drilling in Potomac River to explore options to rehab underwater sewer line
When one of your major sewer lines runs through the Potomac River, a backhoe and trencher won't do. That's why we've got helicopters carrying a 14-ton drill and workers suspended midair over the Potomac.
Upcoming Meeting
Date
February 23, 2026
Monday, 9:30 AM

Upcoming Events

Customer Service Center Announcement

Payment Plan Incentive: provides a credit back of 50% of the last 3 payments made. Eligible participants are residential customers who have had an outstanding balance for 60 days or greater and with an outstanding balance of $500 or more.