As part of Massachusetts Department of Transportation’s Accelerated Bridge Program, the $54-million project reached substantial completion in March 2013, five months ahead of schedule.

Neponset River Bridge

Boston, MA

Rehabilating a Major Arterial Bridge

The Neponset River Bridge, which connects 60,000 daily vehicles to the two major Massachusetts cities of Boston and Quincy, was in need of a major rehabilitation to address numerous problems with the aging structure. Carrying three lanes in each direction and two pedestrian sidewalks, this 23-span bridge was completely rehabilitated under a two-phase program that addressed serious structural deficiencies while integrating a workable traffic management scheme to maintain daily traffic.

The $20-million Phase 1 substructure work, which included the complete reconstruction of deteriorated hammerhead pier caps and a seismic retrofit with isolation bearings, was performed entirely below the roadway with minimal impact to traffic. The $34-million Phase 2 increased pedestrian safety with improved access, wider sidewalks, new pedestrian ramps, as well as new lights and rails. During this phase we also completely reconstructed the roadway deck.

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Learn more about Neponset River Bridge


total feet


  • Transportation


  • Infrastructure


  • Northeast
  • transportation
  • Neponset River Bridge
  • infrastructure


Boston, MA

Completion Date



Massachusetts Department of Transportation


Award of Merit | ENR New England
Engineering Excellence Bronze Award | ACEC/MA

Project Length

2,800 total feet


54 million
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