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Longfellow Bridge Aerial, May 2016MassDOT’s contractor is scheduled to begin the next stage of construction on the Longfellow Bridge in August 2016 now that the MBTA Red Line trains have been moved to their new locations.

In this stage, bridge rehabilitation work will occur under the MBTA outbound track. View the Stage 4 Graphic for travel space configuration along the Longfellow Bridge.

As a result of the next stage of work, a traffic shift will be implemented as follows:

Traffic Shift

  • Inbound vehicles will be shifted to the upstream roadway on Monday, August 1. The crossover in Cambridge at the MBTA Red Line tunnel will be closed and vehicles traveling inbound to Boston will continue from Broadway and Third Street onto Main Street and straight across the bridge.
  • Bicycle traffic, both inbound and outbound, will continue to use the upstream sidewalk for the time being. Cyclists should use caution, obey traffic signals, and watch for vehicles and pedestrians when accessing the Longfellow Bridge at Charles Circle and Kendall Square.
  • Pedestrians will continue to use the downstream sidewalk to cross the bridge.

Red Line Configuration

The construction of the temporary inbound Red Line track (called a “shoo-fly”) was completed recently over a series of weekends. The inbound trains were shifted to the shoo-fly track on the upstream roadway and the outbound trains were shifted to the newly constructed, future inbound track. This shift allows the contractor to rehabilitate the bridge under the current location of the MBTA outbound tracks.

The Cambridge-bound detour remains in place using the existing signed route from Charles Circle following Charles Street to Leverett Circle, Monsignor O’Brien Highway (Route 28)/Charles River Dam Road and Land Boulevard.

For more information, visit the project website.  For questions or issues and concerns related to construction, please call the project hotline at 617-519-9892 or email longfellowbridge@state.ma.us.

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