This project included construction of the Grand Central Terminal Station Caverns and installation of the track and special track work in the tunnels and GCT Caverns. The Cavern work included fabrication and construction of the permanent structural concrete lining, interior structures, and fit-out of the cavern spaces. The contract also included installation of all track, special track work and third rail from the south end of the stations through the GCT Caverns, and through the tunnel portals in Queens. The contract work in Queens Bellmouth included closure and backfill of the existing open tunnel structures and backfill of the structures and the site.

The scope of work also included structural precast fit-out of two 1000-foot existing caverns with 830 precast beams, 844 precast panels, 694 precast walls, and 370 precast platforms.

Track work consisted of 52,000 track feet of RTB Tieblock construction, 14,000 track feet of direct fixation construction, 64,000 linear feet of contact rail installation, 32 turnouts, 52 switches, double cross-over construction, and 35,000 cubic yards consisting of track bed concrete, traction power, and signal conduit installation.

The architectural station was fit out with stainless steel wall panels; modular metal ceilings; Terrazzo, ceramic and stone flooring; glass enclosures; and stair and elevator fit outs.

Also included was 34,000 cubic yards of structural concrete, pneumatically applied concrete, demolition, excavation/backfill, and site restoration and tunnel rehab, MEP, facility power, lighting, SCADA, fire detection, communication, control systems, and security.

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