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Silver Line Gateway

About This Project

The Silver Line Gateway Project will provide new, dedicated bus rapid transit (BRT) service connecting Chelsea and East Boston (via the Blue Line’s Airport Station) with the Red Line’s South Station and Seaport District in Boston. Four new BRT Stations will be located at Eastern Avenue, Box District, Bellingham Square, and Chelsea. The preferred alternative was selected by MassDOT based on public input and due to its fast travel times and high potential ridership.

MassDOT is also coordinating with the City of Chelsea and the Executive Office of Energy and Environmental Affairs to develop the Chelsea Greenway, a new shared-use path. To learn more, visit the Project Overview page.

MassDOT continues to welcome your ideas and participation in this process while the project is in construction. Please sign up for email alerts and participate in community meetings. Interpreters will be available at community meetings and project information will be posted on this website.

Traffic Management

Overnight Lane Closures, Sept. 18-21 and Sept. 25-28

The Massachusetts Department of Transportation (MassDOT) will implement lane closures over a series of nights during the next two weeks in Chelsea. The contractor will install traffic conduits, and then mill and pave the roadway on several area streets for the Silver Line Gateway project:

  • Monday, September 18, through Thursday, September 21, from 7:00 PM each night to 5:00 AM the following morning – The contractor will implement single lane closures, as needed, at the intersection of Eastern Avenue and Central Avenue.
  • Monday, September 25, through Thursday, September 28, from 7:00 PM each night to 5:00 AM the following morning – The contractor will implement single lane closures, as needed, at the intersection of Eastern Avenue and Central Avenue, and in the vicinity of the Silver Line Busway at Cottage Street, Highland Avenue, the intersection of Arlington Street and Sixth Street, Spruce Street, and Everett Avenue.

Through traffic will be maintained at all times, so no detours are required. Pedestrian access, bus service, and access to local businesses will be maintained.

New Washington Avenue Bridge Reopened September 14, 2016

Chelsea's Washington Avenue Bridge, originally closed in May 2015, reopened to two-way traffic on September 14, 2016. The bridge, which spans the existing commuter rail line and planned busway, was determined to be "functionally obsolete." The completion of the new bridge was a major milestone for the Silver Line Gateway Project. The new bridge provides clearance for the commuter rail and two planned busway lanes to pass beneath it.

The replacement bridge was designed and constructed to the latest MassDOT Bridge Standards. It consists of two 11-foot travel lanes, a 4-foot shoulder on the east side, an 8-foot parking lane on the west side, and 9-foot sidewalks on both sides. McCourt Construction Company, the General Contractor, began construction in early 2015. The bridge, which was constructed in two stages, was closed in May 2015, and partially opened to emergency vehicles in January 2016. Construction has been substantially completed as of September 7, 2016. The bridge was initially to be closed for a period of not more than 700 days, and it was completed approximately 220 days ahead of schedule.

MassDOT thanks the City of Chelsea and community residents and businesses for their patience and understanding during the bridge closure and for the next few months. The sidewalk on the west side will remain closed while final elements are being constructed.

Conversion of Arlington Street and Sixth Street to One-Way

Phase 1 of the Silver Line Gateway Project includes construction of a dedicated busway extending from Everett Avenue to Eastern Avenue. The busway requires changes to intersections at Everett Avenue, Spruce Street, Eastern Avenue and Arlington Street/Sixth Street.

To reduce potential conflicts of turning movements within the 6-legged intersection of Arlington Street, Sixth Street and the Busway, both Arlington Street north of the intersection and Sixth Street east of the intersection have been converted to one-way:

  • Arlington Street is now one-way from Sixth Street to Heard Street
  • Sixth Street is now one-way from Arlington Street to Washington Avenue

The one-way conversion on Arlington Street and Sixth Street occurred on August 23, 2016. View the One-Way Circulation Map in English or Map in Spanish for details.

What's New

MassDOT will implement two sets of lane closures in Chelsea so the contractor can mill and pave the roadway. The closures will take place on September 18-21 and September 25-28, from 7:00 PM each night to 5:00 AM the following morning. More details can be found in the Traffic Management section, below.

Work continues on aspects of the Busway, including retaining walls, BRT station foundations, platforms, canopies, roadway pavement, utilities, lighting, signage, and the shared-use path. MassDOT expects to begin operating the Busway and BRT stations in early 2018.

Contact Us

Please contact Dan Fielding, Legislative Liaison, MassDOT Highway Division with any questions or concerns at (857) 368-8959 or email

Email Updates

Sign up to receive Silver Line Gateway project updates for meeting notices, traffic alerts, and other project information.

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