• Railroad / Transit Tunnels
  • Tunnel Rehabilitation
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Port Authority Trans – Hudson (PATH)

Port Authority of New York / New Jersey

The over 100-year-old underground railway tunnels and station scheme beneath the Hudson River between New York City and New Jersey required refurbishment and upgrading. The station improvements included the construction of several cross-tunnels, which connected the existing tunnels and allowed for track crossovers, and replacement of an existing signal relay room. Tunnel E and F works encompassed a complete renovation of the tunnels’ interiors. Rails, controls, power, lighting, and related structural components of Tunnels E and F were replaced.

Construction Ventilation Design:

Gall Zeidler Consultants advised on the construction tunnel ventilation, developed associated contract documents (specifications and layouts), and performed a check of the contractor’s ventilation design.


New York, New York / Jersey City, New Jersey


2002 – 2003


Tunnels E & F and Exchange Place Underground Station


6,000 feet (1,829 meters) Each


Running Tunnels of Approximately 315 square feet (30 square meters) with Varying Size Station Tunnels


Hard, Massive to Fractured Schist, and Igneous Rock, High Groundwater Table


Approximately $160 Million


Gannett Fleming, Inc.


Port Authority of New York / New Jersey