The District Department of Transportation (DDOT) has issued a detailed schedule for extensive lane closures in the 9th Street Tunnel, a key artery for southbound traffic in downtown Washington, D.C. Starting Monday, Sept. 28, one outer lane of the tunnel will be shut down around the clock, seven days a week, and will remain closed until June 30, 2027.
Closure Plan and Timeline
According to DDOT, the initial closure will affect the left outer lane near Constitution Avenue NW. As work progresses, crews will shift the closure to the right outer lane, allowing limited access for the remaining lanes. In addition, the center lane may be temporarily closed for up to six hours during off‑peak periods, which could reduce southbound traffic to a single lane.
Reason for the Work
DDOT officials say the extended closures are necessary to perform structural repairs and routine maintenance on the tunnel’s infrastructure. The agency did not disclose the specific cause of the damage that prompted the repairs, only noting that the work follows damage sustained earlier this year.
Impact on Drivers
Motorists are advised to expect delays, especially during peak commuting hours. DDOT recommends allowing extra travel time or using alternate routes such as the nearby I‑395, the Whitehurst Freeway, or surface streets like K Street and Pennsylvania Avenue. The department also urges drivers to stay informed through DDOT’s website and social media channels for real‑time updates on lane availability.
Community Response
Local commuters and businesses have expressed concern about the prolonged disruption, noting that the tunnel serves thousands of vehicles each day. While some residents have voiced criticism, DDOT emphasizes that the repairs are essential to ensure the long‑term safety and reliability of the tunnel, which is a critical component of the city’s transportation network.
What to Expect Going Forward
Throughout the repair period, DDOT will monitor traffic flow and adjust lane closures as needed to minimize congestion. The agency plans to provide periodic updates on the progress of the work and any changes to the closure schedule. Drivers are encouraged to check the DDOT traffic map and consider car‑pooling, public transit, or flexible work hours when possible.
By addressing the structural issues now, DDOT aims to prevent more severe disruptions in the future and to maintain the tunnel’s role as a safe, efficient conduit for southbound traffic in the nation’s capital.
Original reporting: Alexandria, VA News – WTOP News — read the source article.
