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Longfellow Bridge Aerial, May 2016MassDOT and its contractor, White-Skanska-Consigli (WSC), are combining Stages 4 and 6 of Longfellow Bridge Project construction in August 2016 to complete the project sooner. MassDOT began the multimodal shifts to accommodate the combined stages following relocation of the Red Line trains in mid-July. All bridge users will use the upstream side to make this acceleration possible.

Under this plan, WSC will simultaneously rehabilitate the bridge under the MBTA outbound track (Stage 4) and reconstruct the downstream roadway and sidewalk (previously planned for Stage 6). With this modification, the contractor anticipates having all modes of travel in their final configuration by June 2018. This is a three-month improvement to the date that was announced in May. Stage 5 will be performed after the combined Stages 4 & 6.

View the Stage 4 & 6 Graphic for travel space configuration along the Longfellow Bridge. Learn more about Stage 4 & 6 in the Construction Updates section of the project website.

Travel Shift

To accommodate the combined construction phase, all modes of travel will use the upstream side of the bridge. The bike and pedestrian shift is scheduled for Monday, August 29. (UPDATE: the shift will occur on Friday, August 26, 11pm).

  • Inbound vehicles were shifted to the upstream roadway on August 1, including adjustments to the crossover in Cambridge.
  • Pedestrians will use the upstream sidewalk for travel in both directions.
  • Inbound bicyclists will have a new 5-foot wide designated bike lane on the upstream roadway.
  • Outbound bicyclists will share the upstream sidewalk with pedestrians. The new upstream sidewalk is 8 feet 9 inches wide and can accommodate one bike lane and pedestrians.
  • While outbound cyclists may ride their bikes on the sidewalk, MassDOT asks that cyclists and pedestrians use caution and respect the rights of everyone to use public infrastructure in this temporary shared configuration.
  • MBTA and emergency response access across the bridge will be maintained at all times.

Visit the project website to learn more about the Stage 4 & 6 bike routes and to view the bike route maps for the Boston Approach and the Cambridge Approach.

Red Line Configuration

The construction of the temporary inbound Red Line track (called a “shoo-fly”) was completed over a series of weekends in July. 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 WSC 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.

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