Here’s the good news: Metro has developed a viable solution to the persistent tunnel leaks on the Red Line blamed for starting smoke incidents and accelerating the aging of track infrastructure.
The bad news: More weeknight single-tracking and weekend closures from mid-October until just before Thanksgiving.
Metro announced last week that the water-leak mitigation project on the Red Line that began in July is being expanded to an additional 4,000-foot section of track between Medical Center and Grosvenor. The transit agency decided to expand the program after engineers determined a membrane outside the Red Line tunnel is reducing water infiltration.
The additional work will require single-tracking every weeknight after 9 p.m. between Medical Center and Grosvenor stations from Oct. 16 through Nov. 24. Trains will single-track through the area on the weekends of Oct. 21-22 and Nov. 11-12.
Meanwhile, the Red Line will be shut down between Medical Center and Grosvenor-Strathmore on the weekends of Oct. 28-29 and Nov. 18-19. Free shuttle buses will replace trains on that stretch of the Red Line.
Single-tracking will also occur between Medical Center and Twinbrook stations for other track week on the weekend of Nov. 4-5.