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Green Line D Track and Signal Replacement

Updated on February 22, 2019

Placing ties. Machinery on the left, a construction crew on the right.

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

View larger map as a PDF

Map of the Green Line D branch showing track and signal work by color. Track and signal replacements will occur at Riverside, Waban, Newton Highlands, Newton Centre, Chestnut Hill, and Reservoir. Signal replacement only will occur at Woodland and Eliot. Track replacement only will occur at Beaconsfield.

Service Alerts

Bus shuttles will replace train service on some portions of the D branch during certain periods from 2018 through 2020.

View all Green Line D alerts

Get Involved

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

Featured Photos

Contact Information

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