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Green Line Transformation

Four slices of images: 1) a construction crew working on the tracks, 2) a T employee with a safety vest and hard hat giving directions to a man in a wheelchair, 3) the exterior of a Green Line train, 4) the interior of a Green Line train, with many riders.

As part of our $8 billion, five-year capital investment plan that began July 1, 2018, we're modernizing and transforming the Green Line. Green Line Transformation (GLT) projects represent four levels of transformation:

  • Safety and State of Good Repair
  • Accessibility
  • Legacy Car Replacement
  • Capacity

Each level aims to improve reliability and the overall quality of service for all riders and communities served by the Green Line.

GLT in 2021

We've accelerated construction on many projects in 2021. Take a look at the work we've completed recently—and learn more about what's coming up.

See a list of GLT weekly progress updates

All GLT Projects

ProjectLocationStatus
ProjectGreen Line Train Protection System (GLTPS)Location

green line Systemwide

Status In progress
ProjectHynes Station
Accessibility Improvements
Location

green line B green line C green line D

Status In progress
ProjectSolar-Powered E Ink SignsLocation

green line B green line C green line E

Status In progress
ProjectD Branch Station Accessibility ImprovementsLocation

green line D

Status In progress
ProjectBrookline Hills Station
Accessibility Improvements
Location

green line D

Status In progress
ProjectD Branch Track and
Signal Replacement
Location green line D Status In progress
ProjectLechmere Viaduct RehabilitationLocation green line E Status In progress
ProjectNewton Highlands Station
Accessibility Improvements
Location green line D Status In progress
ProjectSymphony Station
Accessibility Improvements
Location green line E Status In progress
ProjectB Branch Station ConsolidationLocation green line B Status Complete
ProjectNew Green Line VehiclesLocation green line SystemwideStatus Complete
ProjectTrack and Intersection Upgrades (2021)Location green line B green line E Status Complete
ProjectTrack and Intersection Upgrades (2020)Location green line B green line C green line E Status Complete
ProjectTrack and Intersection Upgrades (2019)Location green line B green line C mattapan line Status Complete
ProjectFenway Portal Flood ProtectionLocation

green line D

Status Complete

Building a Better T

As part of our $8 billion, 5-year capital investment plan, we're renovating stations, modernizing fare collection systems, upgrading services for our buses, subways, and ferries, and improving the accessibility of the entire system.

Learn more

Green Line Transformation 2020 Year in Review

Crews work on the tracks as part of the Green Line Transformation project

Take a look back at the milestones the Green Line Transformation team reached in 2020.

View the 2020 summary

Recent Updates

View all project updates

Be Part of the Green Line Transformation

We'd like to hear what you think would make the Green Line more comfortable, accessible, enjoyable, and easy to use.

Tell us what you think
Four slices of images: 1) a construction crew working on the tracks, 2) a T employee with a safety vest and hard hat giving directions to a man in a wheelchair, 3) the exterior of a Green Line train, 4) the interior of a Green Line train, with many riders.

Related Projects

Green Line train pulling into the Science Park/West End Station

Green Line Extension (GLX)

The Green Line Extension (GLX) will extend the northern end of the Green Line from Lechmere to Union Square in Somerville and College Avenue in Medford.

Benefits

Every Green Line Transformation project meets at least one, sometimes many, of our program goals.

Program Updates

Learn more about our GLT team members and what we've been working on each week.

Public Meetings and Presentations

Learn more about how we’re engaging with the public and the Fiscal and Management Control Board as this program progresses. 

Past Events

View all events

Contact Information

For all queries and comments related to Green Line Transformation, please contact GLT@mbta.com.

To report construction issues or noise complaints, please call the project hotline: 617-222-4100.

For More Information

Get project news, updates, and information delivered to your inbox.

Building a Better T

As part of our $8 billion, 5-year capital investment plan, we're renovating stations, modernizing fare collection systems, upgrading services for our buses, subways, and ferries, and improving the accessibility of the entire system.

Learn more

Green Line Transformation 2020 Year in Review

Crews work on the tracks as part of the Green Line Transformation project

Take a look back at the milestones the Green Line Transformation team reached in 2020.

View the 2020 summary

Recent Updates

View all project updates

Related Projects

Green Line train pulling into the Science Park/West End Station

Green Line Extension (GLX)

The Green Line Extension (GLX) will extend the northern end of the Green Line from Lechmere to Union Square in Somerville and College Avenue in Medford.