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Commonwealth Avenue Bridge Replacement

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Comm Ave Replacement

What's New

On the weekend of June 3, MassDOT completed a “Dry Run” on I-90 of the traffic logistics that will be implemented during the 2017 Construction Shutdown. The Dry Run was successfully completed 20 hours ahead of schedule.

To prepare for the major construction activities for the 2017 Construction Shutdown, I-90 (between the Allston Interchange and the Beacon Street Overpass in Boston) will be reduced to 3 lanes in each direction on July 7, and will remain in this configuration after the shutdown until August 28.

See the Traffic Management page for more information, and to view detour routes and maps.

Commonwealth Avenue Bridge Reconstruction Project Update

Public Meetings

MassDOT is hosting two pre-construction public meetings:

Tuesday, July 11, 6:30 PM
Boston University College of General Studies
Jacob Sleeper Auditorium (Lower Level, Room 129)
871 Commonwealth Avenue, Boston

Thursday, July 13, 6:30 PM
Newton Free Library, Druker Auditorium
330 Homer Street, Newton

The same presentation will be delivered at both meetings. Download the meeting flyer for more information on the Meetings and Documents page.

Commonwealth Avenue Bridge Reconstruction Project Update

The project uses Accelerated Bridge Construction (ABC) techniques to:

  • Reduce construction duration - Conventional bridge construction would take an estimated 4-5 years, with more continuous impacts on Commonwealth Ave, the Green Line and I-90
  • Limit impacts on users to two intensive construction windows
  • Improve safety for travelers and workers

View our Video Simulation of the Project

The replacement will restore the deteriorating bridge while adding improvements including:

  • Upgraded vehicular safety and synchronized signalization
  • Dedicated bike layout with dedicated signalization
  • Extensive pedestrian upgrades

Stage 2 (2017 Construction Shutdown) Impact Schedule:

Street/Facility Temporary Impact Notes
The MBTA Green Line B branch (from Babcock Street to Blandford Street Stations) Closed from 9:00 PM on July 26 to 5:00 AM on August 14. Shuttle buses will run between Babcock Street and Blandford Street Stations.
Commonwealth Avenue eastbound and westbound (between Brighton Avenue/Packard's Corner and Kenmore Square) Closed to through motor vehicles from 7:00 PM on July 27 to 5:00 AM on August 14. Two-way access will be maintained for local businesses and residents, MBTA buses, emergency services, pedestrians, and bicyclists. There will be no access for private vehicles between St. Paul and St. Marys Streets.
The Boston University (BU) Bridge Closed to motor vehicles from 7:00 PM on July 27 to 5:00 AM on August 14. Two-way access will be maintained for MBTA buses, emergency services, pedestrians, and bicyclists.
MBTA Bus Routes CT2 and 47 Detoured from normal routes from 7:00 PM on July 27 to 5:00 AM on August 14. See detour map on the Traffic Management page.
I-90 (Mass Pike) (between the Allston Interchange and the Beacon Street Overpass) Lane reductions and ramp closures from 9:00 PM on July 28 to 5:00 AM on August 7. Two lanes in each direction during peak period. The I-90 Eastbound on-ramp from Cambridge Street/Soldiers Field Road will be closed during this entire period. The I-90 Westbound Exit 20 off-ramp to Brighton/Cambridge will also be closed intermittently.
MBTA Commuter Rail Framingham/Worcester Line Service impacts for two weekends: July 29-30 and August 5-6. Service will be maintained during weekdays. Shuttle bus service from Boston Landing to Reservoir Station (Yawkey Way during Sox games).
 Amtrak’s Lakeshore Limited Line  Service impacts for two weekends: July 29-30 and August 5-6.  Shuttle bus service between Albany, NY and Boston.

Contact Us

For all queries and comments related to the Commonwealth Avenue Bridge Replacement Project, please contact James Kersten, MassDOT Legislative Liaison, at 857-368-9041 or CommAveBridge@dot.state.ma.us

Email Updates

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