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commave_msthdMassDOT is announcing that the work to replace the westbound side of the Commonwealth Avenue Bridge is progressing well and MBTA Green Line B trolley service is expected to be using tracks on the bridge this afternoon, and the Commonwealth Avenue Bridge and the Boston University Bridge are scheduled to reopen to vehicular, pedestrian and cyclist use on Saturday, August 11.

“Our crews are continuing to work 24/7 and we are pleased to be restoring MBTA Green Line B trolley service ahead of schedule this afternoon, and lifting vehicular travel restrictions on the Commonwealth Avenue Bridge and the BU Bridge tomorrow,” said Highway Administrator Jonathan Gulliver. “Our contractor has completed all work related to the Green Line B trolley and the MBTA expects that full service will be available for the public for this afternoon’s commute. We have appreciated the cooperation and support from the traveling public, business owners and local community throughout our operations, and we look forward to completing the most impactful and intensive phase of construction work on the westbound side of the Commonwealth Avenue Bridge.”

The MBTA Green Line B branch between the Blandford and Babcock stations was scheduled to re-open for trolley service on the morning of Saturday, August 11. Station stops in this area were diverted to bus shuttles beginning on the morning of Friday, July 27. Now, B line trolleys are scheduled to resume regular service ahead of schedule this afternoon.

Travelers and members of the public are advised to continue to use caution as this area will remain an active construction zone while crews carry out minimally impactful finishing work. Additional traffic impacts may be necessary during off-peak hours over the next several weeks. Remaining work includes completing sidewalks, placing pavement markings, finishing a parapet wall and other punch list items.

Crews are currently conducting operations such as installing granite curbing, waterproofing the bridge deck, paving, putting in place traffic signals, completing utility work and carrying out various other activities. Major construction operations are scheduled to be completed on Saturday, August 11.

This $110 million bridge replacement project, which would take an estimated four to five years using conventional techniques with significant lane-takings and service disruptions, is scheduled for full completion in 2019 under the accelerated plans. The westbound side of the bridge is being constructed this summer using 3 cranes that weigh 600 tons each. Crews have utilized this equipment to put in place 45 steel beams and 214 pre-fabricated concrete deck panels along with 680 cubic yards of concrete and 520 tons of hot mix asphalt.

The full current travel impacts are as follows: 

Pedestrians and Bicyclists

  • Pedestrians and bicyclists continue to have access across the Commonwealth Avenue Bridge on the eastbound side throughout construction.
  • Download the Blue Bikes app on the App Store or Google Play to find a station near you. For a limited time, Blue Bikes is dropping their Single Trip Pass to $1 from July 26 – August 11, available in the Blue Bikes app.
  • MassDOT is also partnering with the City of Boston to provide an additional temporary Blue Bikes station at Silber Way on Commonwealth Ave during the construction period.


Commonwealth Avenue

  • Commonwealth Avenue (between Packard’s Corner and Kenmore Square) remains closed to vehicular through traffic (local access only) until Saturday morning, August 11.
  • Access through this construction area continues to be maintained for local businesses and customers, residents, MBTA customers, emergency services personnel, pedestrians, and bicyclists during this time.

Boston University (BU) Bridge

  • The BU Bridge will continue to be closed through Saturday morning, August 11. Access will be maintained for pedestrians and bicyclists only.

MBTA Green B Line

  • The Green B Line will continue to run shuttle buses between Babcock Street and Blandford Street Stations until the afternoon hours today.  Then B Line trolleys will resume service this afternoon.
  • During the Green Line bus diversions, the MBTA has done work to replace Green Line track throughout Commonwealth Avenue.


  • MBTA Bus Routes CT2 and 47 will continue being detoured from normal routes until the morning of Saturday, August 11.
  • The Route 57 Bus will operate its normal route and will not make outbound stops in the construction area.

The Baker-Polito Administration appreciates the cooperation and patience of the traveling public as core transportation infrastructure is improved. Members of the public are encouraged to utilize the appropriate technology tools including, the MassDOT “GoTime” travel app, and other wayfinding resources to find the most appropriate route, mode, and timing of travel during our construction operations.


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