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O'Brien Highway (Route 28) Reconstruction Project

Divco West, the developer of Cambridge Crossing, is redesigning and reconstructing O'Brien Highway from Land Boulevard to Third Street and some nearby streets. This reconstruction is a requirement of the City of Cambridge Planning Board Permit PB-179. Divco West included the City and Massachusetts Department of Transportation staff in creating the plans.

On O'Brien Highway between Third Street and Land Boulevard, this reconstruction includes:

  • separated bicycle lanes
  • new sidewalks
  • enhanced pedestrian crossings
  • landscaping

On Cambridge Street between Second Street and O’Brien Highway, this reconstruction includes:

  • separated bicycle lanes
  • new sidewalks

Divco West will also construct a new section of First Street between O'Brien Highway and Cambridge Street.

Divco West began roadway reconstruction work in 2019. This reconstruction will be completed in phases.


Divco West will finish rebuilding O'Brien Highway later this year. Their work area includes O'Brien Highway from Land Boulevard to Third Street. In addition, Divco West will rebuild Cambridge Street from Second Street to O'Brien Highway. They will also build a new street to connect First Street and North First Street between O'Brien Highway and Cambridge Street.

Upcoming construction in 2023 includes:

  • New asphalt and final traffic pattern on O'Brien Highway
  • New section of First Street between O'Brien Highway and Cambridge Street with sidewalks, separated bike lanes, and roadway.
  • New asphalt, separated bike lanes, and sidewalks on Cambridge Street between Second Street and O'Brien Highway

Click here to view final reconstruction plans.

Construction on the O’Brien Highway Reconstruction will be going on through 2023.

For more information, send an e-mail to CDD@cambridgema.gov or call 617-349-4600.