DC Water Clean Rivers Project
Project Overview
DC Water began the next phase of construction for the Potomac River Tunnel Project near the university entrance site at Canal Road NW on January 12, 2026. The construction site is located in the wooded area between the university entrance and Canal Road NW.
At this location, DC Water will construct a drop shaft and an underground facility to connect the existing sewer infrastructure to the Potomac River Tunnel to capture combined sewage and stormwater from overflowing into the river and divert it for treatment.
Estimated Construction Start Date: Monday, Jan. 12, 2026
Estimated Completion Date: 2029
Project Type: Construction
Campus: Hilltop Campus
Construction Impacts
Work Hours & Noise Impacts
Increased construction activity, equipment, and personnel in the area are expected for the duration of the project.
Construction activities are scheduled Monday through Saturday, from 7:00 a.m. to 7:00 p.m. Audible construction noise can be expected during these hours. Click here for the list of campus no and limited work dates.
What to Expect
The mobilization phase will last approximately three to four months and will stage the area for work. This includes installing fencing, signage, and safety barriers as well as protecting nearby buildings and infrastructure.
The construction phase will begin immediately after the mobilization phase and is estimated to conclude in early 2029. This phase will include excavation, construction of the drop shaft and diversion structures, and preparation for the tunnel boring machine to pass through the drop shaft.
The final phase is site restoration, which is anticipated to start in early 2029 and conclude in spring 2029.
Safety Measures
The Canal Road NW entrance will remain open. The primary work zone will be in the wooded area near this entrance. The site will be fully enclosed and restricted to the public, and clear signage and physical barriers will guide all road users safely around the work zone.
