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Silver Line 3 Chelsea (SL3)

New SL3 station at Eastern Ave in Chelsea, MA

Timeline: 2015 – 2018
Status: Complete

If you live in East Boston and Chelsea, there’s a new way to get where you need to go: Silver Line 3 Chelsea (SL3)

The SL3 travels through Chelsea and East Boston to Logan Airport, the Seaport District, and South Station. It makes connections to many area bus routes (including the 111, 112, 114, 116, and 117), as well as the Blue Line, Red Line, and Commuter Rail.

Silver Line buses are larger than regular MBTA buses, with room for more passengers as well as luggage and strollers. And don’t worry about getting stuck in traffic—the SL3 travels in dedicated bus-only lanes through Chelsea.

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

Where does the SL3 stop?

The SL3 stops at 4 new Silver Line stations in Chelsea and 5 existing Silver Line stations in Boston:

Where does the SL3 connect to other bus routes?

You can make quick, easy connections to bus routes 111, 112, 114, 116, and 117 at the new Silver Line stations in Chelsea.

How does the Chelsea Street Bridge impact the SL3?

We alert SL3 drivers before the bridge goes up and provide alternate routes based on real-time traffic information. Those alerts will be available to the general public soon.

Photo Gallery

Related Projects

Route 111 Bus in a roundabout in Chelsea, during summertime

Chelsea Regional Transportation Improvements

Together with MassDOT and the City of Chelsea, the MBTA is working to make transportation more efficient, dependable, and equitable.


A rendering of the new Chelsea Commuter Rail Station, with a closeup view of the platform, canopy, and train pulled up.

Chelsea Commuter Rail Station

An all-new, fully accessible Commuter Rail station is expected to open in 2021, next to the current SL3 stop in Chelsea.

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

Route 111 Bus in a roundabout in Chelsea, during summertime

Chelsea Regional Transportation Improvements

Together with MassDOT and the City of Chelsea, the MBTA is working to make transportation more efficient, dependable, and equitable.


A rendering of the new Chelsea Commuter Rail Station, with a closeup view of the platform, canopy, and train pulled up.

Chelsea Commuter Rail Station

An all-new, fully accessible Commuter Rail station is expected to open in 2021, next to the current SL3 stop in Chelsea.