MassDOT Chelsea Viaduct

Chelsea, MA

Project Details

  • Owner: Massachusetts Department of Transportation (MassDOT)
  • Contractor: Skanska McCourt JV
  • Design Engineer / Engineer of Record: HNTB/MassDOT
  • Completion Date: 2020
  • Scope: 313 Prefabricated Bridge Units, 198 Deck Panels

Project Overview

The Chelsea Viaduct is a significant north/south artery carrying U.S. Rte. 1 through Chelsea, MA. Located just north of Boston, the project extends from The Maurice J. Tobin Memorial Bridge on the south end of the project to Orange Street at the north end. In 2018, MassDOT led the project and Skanska McCourt JV was selected as the lowest responsible bidder. The project consisted of full deck and girder replacement and pier retrofitting (“Sister Beams”) for the viaduct and ramps. Fort Miller provided 313 prefabricated bridge units (PBUs) equating to approximately 136,000 SF of precast area and 198 concrete filled grid deck panels equating to approximately 27,200 SF of precast area. Casco Bay from Maine provided the structural steel girders for the PBUs and L.B. Foster provided the steel grid deck for the precast panels. The PBUs ranged from 20 ft long up to 85ft long with the heaviest pick being approximately 150,000 lbs. There were cast-in-place closure pours surrounding each of the PBUs – at the longitudinal and transverse joints – tying the individual decks together. The fascia and median barrier were cast-in-place. The completed deck received a membrane waterproofing and an asphalt overlay. The installation of the PBUs was executed by Atlantic Bridge and Engineering with crane services provided by Bay Crane. Coincidently, Bay Crane also provided delivery service of the PBUs, which they performed flawlessly. The majority of the precast installation was done during off-peak/night-time hours. Working with Skanska McCourt JV and the entire Chelsea Viaduct Team proved to be an exceptional experience.

spaanspan installation

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We have participated in some of the most celebrated bridge projects in recent memory, including the Alexander Hamilton Bridge/Highbridge Interchange, the Kosciuszko Bridge over Newtown Creek in Brooklyn-Queens, New York City, and the replacement of the Tappan Zee Bridge over the lower Hudson River.

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