Boston Green Line Signal Fix Underway at Union Square
Signal problem at Union Square station causes 15-minute delays on Green Line D and E branches
Green Line Faces 15-Minute Delays at Union Square
Boston commuters on the Green Line's D and E branches should expect 15-minute delays Thursday due to a signal problem at Union Square. The Massachusetts Bay Transportation Authority confirmed trains may need to stand by at stations while crews work to resolve the technical issue. Officials didn't provide an estimated resolution time for the disruption.
Signal Problems Affect New Extension Station
The signal problem is occurring at Union Square station, part of the Green Line Extension that opened in 2022. Transit officials said crews are working to address the technical issue affecting service on both branches. The MBTA hasn't disclosed specific details about the nature of the signal problem or how many trains are affected by the delays.
Aging Infrastructure Contributes to Technical Issues
The Green Line is the oldest subway system in the United States, dating back to 1897, and signal problems remain a recurring challenge for the aging infrastructure. The MBTA has been working on signal system upgrades across the Green Line as part of broader modernization efforts since 2024. The Green Line serves approximately 140,000 daily riders based on pre-pandemic 2019 data, making it one of the most heavily used lines in the MBTA system. Officials haven't specified how many riders are affected by Thursday's delays.
Crews Working to Restore Normal Service
The MBTA reported the disruption Thursday morning through its official alert channels. Transit officials said passengers should plan for additional travel time during their commute. The agency hasn't announced when normal service levels will resume or provided updates on the repair progress.
Riders Advised to Check for Updates
Commuters using the Green Line's D and E branches should expect continued delays until crews complete repairs. The MBTA hasn't issued a formal statement beyond the service alert. Riders can check Moovit for real-time updates on Green Line service and alternative routing options during the disruption.
