GAI to Serve as Subconsultant for MBTA Green Line Contract

GAI Consultants to Assist WSK on High-Profile Line Extension—National Engineering Firm to Serve as Subconsultant for MBTA Green Line Contract

Pittsburgh, PA—The Massachusetts Bay Transportation Authority (MBTA) has retained the joint venture of White Skanska Kiewit (WSK) as the Construction Manager/General Contractor for the much-anticipated Green Line Extension Project (GLX). National engineering and environmental consulting firm GAI Consultants, Inc. (GAI) will serve as a subconsultant to WSK. This high-profile project involves extending the existing north Green Line branch from its existing terminus at Lechmere Station to College Avenue in Medford, MA.

Highlights/Key Facts

  • Five new stations will be added along this branch, as well as a single-stop branch at Union Square and construction of a new station at Lechmere.
  • The extension program will be implemented by J.F. White Contracting Co., Skanska USA Civil Northeast, Inc., and Kiewit Infrastructure Co. (WSK), who will serve as the Construction Manager/General Contractor for the MBTA.
  • As a subconsultant, GAI’s Train Control Systems Group will provide final design and engineering, procure equipment, support equipment installation, documentation, and factory testing of complete Commuter Rail Signal Instrument Houses.
  • GAI will assist WSK on three contracts with the MBTA related to the Green Line extension, including procurement of long-lead items; signal installation support, testing, and commissioning for the Fitchburg Mainline; and signal installation support, testing, and commissioning for the New Hampshire Mainline.
  • The Green Line extension project is located within the cities of Cambridge, Somerville, and Medford, MA.
  • GAI established its Train Control Systems Group in early 2013 to expand the firm’s transportation services.
  • GAI’s experienced Rail Transit professionals also provided services on several Washington Metropolitan Area Transit Authority (WMATA) projects, including the H Street/Benning Road Streetcar line in northeast Washington, D.C.

Media Contact

Brittney LeTourneau
Communications Coordinator
321.319.3035

Leah Tuscan
Senior Director, Communications
321.319.3025

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