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Silver Line Extension (SLX) Alternatives Analysis

Silver Line bus on street
  • Timeline: 2020 – 2022
  • Status: Planning

The MBTA is studying the feasibility, benefits, and cost of extending Silver Line service to Everett and the surrounding communities.

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

Why Are We Doing this Analysis?

Many residents in the Chelsea and Everett area rely solely on public transportation to get to work, school, and more. However, residents don’t have the same access to fast, reliable transit as other communities. In response, the T launched the 2018 Silver Line extension from South Station to Chelsea, which provides additional transit options for riders in the area.

The MBTA's Focus40 plan recommends that we extend Silver Line service into Everett and beyond to provide more access to job opportunities and resources in the greater Boston area.

Prior studies, including the Lower Mystic Regional Working Group Report and the Everett Transit Action Plan, made similar recommendations for extending Silver Line service in the area. Those studies will help inform the Silver Line Extension Alternatives Analysis.

Learn more about Regional Transportation Improvements

Project Phases

Over three project phases spanning 18 months, the analysis will explore potential solutions—along with the benefits and impacts of each—for extending service into the surrounding communities.

Provide Feedback for Phase 2

In Phase 2 of the project, we’re developing goals and objectives to guide the study. We welcome your feedback on Silver Line Extension through this short survey:

We’re identifying potential routes in four geographic areas:

  • Chelsea Station to Everett
  • Everett to the Orange Line
  • The Orange Line to Kendall Square
  • The Orange Line to Downtown Boston

We welcome your feedback on these potential routes, and any additional ones you think should be considered. To add a comment on the interactive map:

  1. Press the blue “Post Comment” button on the top right corner of the map
  2. Click the area of the map that relates to your comment
  3. Type your comment in the pop-up message box and press “Post”

Your comments will be visible to MassDOT, the MBTA, and members of the public. Your name and email are not required, but if provided, will also be public. 

Past Events

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Contact Information

For all questions and comments related to the SLX Alternatives Analysis, please contact the project team at slx@mbta.com.

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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

Better Bus Project: Making transit better together

Better Bus Project

Too many of our bus routes still fail to live up to our own standards. Through the Better Bus Project, we are changing that.


A boring machine and Commuter Rail car outside of Chelsea Station

Chelsea Commuter Rail Station

We're building an all-new, fully accessible Commuter Rail station next to the final SL3 stop in Chelsea. It's expected to open in 2021.

View all projects