Number 7 Line Extension - Manhattan, New York, NY

Construction of running tunnels & station structures number 7 (flushing) line extension.

Manufacture and deliver 2,894M of precast, bolted, gasketed tunnel liners.
ID = 6.10M

Owner : The New York City Transit Authority and MTA Capital Construction Company

General contractor : S3II Tunnel Constructors (A Joint Venture of Shea, Skanska and Schiavone)

Quantity of precast tunnel liner : 9,500 ft x 19,5' diameter (2 900 m x 6 m diameter)

Production Period : 2009 - 2010