NYC’s 7 Subway Line Extension Project awarded Project of the Year

The 7 Line Extension is being constructed by the S3II Tunnel Constructors joint venture (consisting of JF Shea, Skanska and Schiavone), with Parsons Brinckerhoff having undertaken the permanent works design, and with HLH7 Joint Venture (consisting of Hill International, LiRo Engineers and HDR/Daniel Frankfurt) providing construction management services. S3II employed Arup as its engineer for initial ground support and construction sequencing for drill and blast operations; while Hatch Mott MacDonald was retained to design the precast segmental liner installed during the TBM drives. GZA GeoEnvironmental is the instrumentation consultant and also contributed to geological interpretation and field engineering. The project is scheduled to open in June 2014.

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