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Green Line Transformation 2020 Year in Review

Updated on December 17, 2020

As 2020 comes to an end, we’re taking a look back at the milestones the Green Line Transformation team has reached this year, and looking ahead to what’s coming in 2021.

We know that diversions and construction can be inconvenient at times, and we appreciate your understanding as we work to provide the quality of service you want and deserve.

See the GLT 2020 Year in Review summary

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

Fenway Portal Flood Protection Project

Crews install the new flood door at Fenway Portal (November 2020)

Status: Complete

The Fenway Portal, the entrance to the Green Line tunnel next to Fenway Station, is subject to flooding due to its location near the Muddy River. In the past, significant weather events have led to flooding that caused major damage and shutdowns along the Green Line.

On November 23, 2020, crews completed installation of floodgates and large steel doors that will help prevent future flooding. Crews also installed an updated pumping station and new cameras to monitor potential flood risks to our system.

Learn more about the Fenway Portal Flood Protection Project

Green Line Track and Intersection Upgrades (2020)

Crew members aligning rail and replacing rail ties on the Green Line C

Status: Complete

Crews replaced more than 6 miles of track and 15 intersections on the Green Line B, C, and E branches. This accelerated work helps to improve rider experience, safety, and accessibility, in addition to allowing us to lift speed restrictions for faster service.

Work on the C and E branches was completed in July and August 2020, and work on the B Branch was completed in September 2020.

Learn more about Green Line Track and Intersection Upgrades (2020)

Lechmere Viaduct Rehabilitation

Crews working on the Lechmere Viaduct Rehabilitation with the city and fall foliage in the background

Status: In progress

Crews are rehabilitating and replacing track on the historic Lechmere Viaduct, which carries Green Line trains across the Charles River and into Downtown Boston. These upgrades will increase train frequency and strengthen the structure of the viaduct while preserving its facade.

In May 2020, the bridge was closed to support work on both the Lechmere Viaduct Rehabilitation and the adjacent Green Line Extension (GLX) project. The Lechmere Viaduct is currently at 47% completion.

Learn more about the Lechmere Viaduct Rehabilitation

Green Line D Track and Signal Replacement

A team of workers install new signal cables near Chestnut Hill on the Green Line D branch.

Status: In progress

Crews are replacing 25,000 feet of track and 6.5 miles of signals on the Green Line D Branch. This work will improve maintenance turnaround times and reduce the risk of service interruptions. We’ll also be able to lift speed restrictions on some sections of the Green Line, resulting in faster service.

Work is taking place in various locations:

Learn more about Green Line D Track and Signal Replacement

Learn more about the Green Line Transformation

Other ongoing GLT projects include:

Contact Information

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

Related Projects

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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

Related Projects

View all projects