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Comm Ave Replacement

Construction Phase Schedule

Stage 1: June 2016 to July 26, 2017 – COMPLETE

This phase included utility work in the vicinity of the Commonwealth Avenue Bridge, as well as roadway preparation and enabling work for the 2017 shutdown (Stage 2).

Stage 2 (2017 Construction Shutdown): July 26 to August 16 - COMPLETE

This phase included the replacement of the Commonwealth Avenue eastbound and MBTA Green B Line portions of the bridge deck.

Stage 3: August 16, 2017 to July 26, 2018 - COMPLETE

This phase included utility relocations, roadway and traffic signal work, fencing, curb setting, and finishing work on sidewalks.

Stage 4 (2018 Construction Shutdown): July 26 - August 11 - COMPLETE

This phase included the replacement of the Commonwealth Avenue westbound portion of the bridge deck.

Stage 5: August 11, 2018 to Spring 2019

This phase includes final utility relocations and landscaping along with reconstructing the I-90 median and re-paving I-90 from approximately the Exit 20 ramps to the Prudential Tunnel entrance. Off-peak or overnight lane closures on Commonwealth Avenue in the vicinity of the bridge will be required during this final stage. MassDOT estimates the entire project will be completed in Spring 2019.

Finished Condition

Detail explained in text

The finished condition will include the following improvements:

  • Dedicated bike lanes on BU Bridge improve safety by eliminating turning conflicts between bicycles and automobiles (shown in green in the image above).
  • Sidewalk and pedestrian walkway enhancements for improved accessibility.
  • A floating bus island for the Route 57 bus at the Commonwealth Avenue westbound & University Road stop, in which the bike lane has been shifted behind the bus stop.
  • A second right-turn only lane has been added for traffic turning onto the BU Bridge from Commonwealth Avenue, and for traffic turning onto Essex Street from Commonwealth Avenue to improve traffic flow.
  • An additional turning lane on Carlton Street.
  • Traffic signal on University Road.
  • Improved MBTA Green Line B branch over the new bridge.
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