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Green Line D Track and Signal Replacement

Updated on October 18, 2018

Tracks at Riverside

About the Project

Timeline: 2018-2020
Status: Construction
Green Line D Track and Signal Replacement

This project is part of the MBTA initiative to bring the Green Line track and signal systems into a state of good repair.


  • Replace approximately 6.5 miles of signal infrastructure
  • Replace 25,000 feet of track
  • Replace special trackwork between Beaconsfield and Riverside stations

Project Features

  • Signal equipment will be centralized at stations
  • Modern electronics will replace antiquated, obsolete signal equipment
  • Continuous welded rail will replace jointed rail


  • Modern signal system will be less likely to fail, resulting in fewer delays
  • Reduction in signal failures and response times
  • Fewer signal delays will increase reliability of Green Line operations
  • Maintenance of Way will be able to remove speed restrictions on the D branch

Replacements by Station

Map of the Green Line D branch from Riverside to Reservoir, showing track and signal replacements by color

View larger map as a PDF

StationRiversideReplacementsTrack and signal
StationWabanReplacementsTrack and signal
StationNewton HighlandsReplacementsTrack and signal
StationNewton CentreReplacementsTrack and signal
StationChestnut HillReplacementsTrack and signal
StationReservoirReplacementsTrack and signal

Service Alerts

Check Green Line D alerts

Late Evening Bus Shuttles (Sunday – Thursday)

During select months, bus shuttles will replace train service on some portions of the D branch, Sunday – Thursday, starting at 9 PM:

  • October 8, 2018 – December 28, 2018 (view a map of this work)
  • April 2019 – December 2019
  • April 2020 – December 2020

Note: Regular train service will run later on evenings when there are Red Sox home games and other special events.

Weekend Bus Shuttles (Saturday and Sunday)

Additionally, over at least 15 weekends in 2019 and 2020, bus shuttles will replace train service on some portions of the D branch from beginning of service Saturday to end of service Sunday.

Get Involved

To report a noise complaint or issue, call the 24/7 noise hotline at 508-676-3550.

Featured Photos


September 27, 2018

Impacts to Neighboring Residents and Businesses

Starting, October 8, 2018, the MBTA’s contractor will work overnight shifts, Sundays – Thursdays, 9 PM – 5 AM, in Brookline.

Contact Information

For all queries and comments related to Green Line D Track and Signal Replacement, please contact: