The Gateway Trans-Hudson Partnership (GTHP), a joint venture of WSP, AECOM and STV, is providing preliminary engineering services to Amtrak for the Hudson Tunnel project as well as supporting the NEPA process for getting the record of decision (ROD). This preliminary engineering design effort by GTHP includes geotechnical exploration and laboratory testing, design of structures, tunnel contract packaging and procurement planning.
The Hudson Tunnel project includes the construction of a new Hudson River Tunnel system and rehabilitation of the existing North River Tunnel.
The new tunnel system will be constructed south of the existing North River Tunnel, from North Bergen under the Palisades to Hoboken in New Jersey, below the Hudson River, and connecting directly to Penn Station in New York (Fig. 1). The tunnel system is configured as two single-track tubes, intermediate ventilation shafts and cross passages in compliance with NFPA-130 requirements. The adjacent surface alignment west of the Palisades will be constructed on viaducts, embankment and retained fills.