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I-90 Commonwealth Avenue Bridge GraphicAs part of the Commonwealth Avenue Bridge Replacement Project, “dry run” lane reductions on I-90 have been scheduled during the weekend of June 3-4 through early Monday morning, June 5.

From 11:59 PM on Friday, June 2, to 5:00 AM on Monday, June 5, MassDOT will reduce I-90 between the Allston Interchange and the Beacon Street Overpass in Boston to 2 lanes in each direction. The I-90 Eastbound on-ramp from Cambridge Street and the I-90 Westbound Exit 20 off-ramp to Brighton/Cambridge will also be closed intermittently (see the I-90 (Mass Pike) Ramp Closures Detour Map).

This will allow MassDOT and its contractor to conduct necessary preparation activities and a “dry run” to test the I-90 traffic logistics for the 2017 Construction Shutdown (July 26 – August 14), with the goal of making sure it will run as smoothly as possible.

During the dry run, a “crossover” on I-90 will direct all vehicles to either the eastbound or westbound roadways at different periods of time. There will be no impacts to the MBTA Green Line, Commuter Rail, or Commonwealth Avenue during the dry run.

I-90 Impacts during the 2017 Construction Shutdown:

  • I-90 will be reduced to 2 lanes in both directions from 9:00 PM on July 28 to 5:00 AM on August 7, with additional lane closures during off-peak hours. The I-90 Eastbound on-ramp from Cambridge Street and the I-90 Westbound Exit 20 off-ramp to Brighton/Cambridge will also be closed intermittently during this timeframe.
  • The lane reductions will be in place between the Allston Interchange and the Beacon Street Overpass.
  • The lane reductions will be necessary during the shutdown for the contractor to access the Commonwealth Avenue Bridge for demolition and replacement (see the video simulation of the project on YouTube).
  • To prepare for the major construction activities for the shutdown, I-90 will be reduced to 3 lanes in each direction on July 7, and will remain in this configuration after the shutdown until August 28.

For a full list of traffic impacts during the 2017 Construction Shutdown, see the Traffic Management page of the project website. MassDOT will announce further public meetings prior to construction.

Please share this advisory with anyone you think may be interested in the project, and encourage them to sign up for email alerts for traffic updates and meeting announcements.

For more information, visit the Commonwealth Ave Bridge Replacement Project website.

For any questions or comments, please contact Jim Kersten at 857-368-9041 or by email at CommAveBridge@dot.state.ma.us.

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