Boston Green Line Upgrades to Boost Long-Term Reliability

MBTA shuts down Green Line service for 16 days to replace 130-year-old infrastructure

MBTA Suspends Green Line for 16 Days

Green Line riders face a 16-day service suspension between North Station and Babcock Street starting December 14, the MBTA announced Tuesday. The shutdown affects all four branches—B, C, D, and E—through December 29 while crews replace century-old infrastructure and install safety systems. Shuttle buses will replace train service during the closure, though officials didn't specify how many buses will operate or exact route details.

Aging Infrastructure Drives Closure

The suspension allows workers to replace a 130-year-old wooden overhead catenary wire trough that delivers power to Green Line trains. The component dates to the system's earliest days—Boston's Green Line opened in 1897 as America's first subway. Transit agencies typically schedule major infrastructure work during periods that minimize rider impact, though the December timing coincides with holiday travel. The MBTA hasn't disclosed the total cost of the replacement project.

Safety System Installation Continues

Crews will also advance installation of the Green Line Train Protection System during the closure. The safety technology represents part of a broader industry shift toward automated train control systems that can prevent collisions and derailments. Officials said the suspension lets them complete multiple projects at once, reducing the need for future service disruptions. Specific technical specifications for the new catenary system weren't available.

Service Resumes After Holidays

Normal Green Line service returns December 30, officials said. The suspension runs through the final weeks of December, a period that typically sees reduced weekday commuter ridership due to holiday schedules. The Green Line averaged about 140,000 weekday riders before the pandemic, though current ridership figures for the affected segment weren't provided. Officials didn't say whether they'll release more detailed information before the suspension begins.

Alternative Service During Closure

Riders traveling between North Station and Babcock Street should plan for longer trips using shuttle buses during the 16-day period. The MBTA said it'll provide alternative transportation but hasn't released specific shuttle schedules or frequency details. Commuters can check Moovit for real-time updates on shuttle bus locations and estimated arrival times during the suspension. Officials said they're working to minimize inconvenience while completing essential infrastructure work that'll improve long-term reliability.