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Evaluation of the train signal and rail systems for the Anton Anderson Memorial Tunnel.
  • Published Date:
    2014-07-01
  • Language:
    English
Filetype[PDF-16.91 MB]


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Evaluation of the train signal and rail systems for the Anton Anderson Memorial Tunnel.
Details:
  • Corporate Creators:
    Alaska. Dept. of Transportation. Research, Development, and Technology Transfer
  • Report Number:
    FHWA-AK-RD-14-06
  • Resource Type:
  • Geographical Coverage:
    Alaska
  • Corporate Publisher:
    Alaska. Dept. of Transportation and Public Facilities. Research, Development and Technology Transfer
  • Format:
    PDF
  • Description:
    The Whittier Access Project was completed in 2000. One phase of the project was to convert the 2.5 mile long Anton Anderson

    Memorial Tunnel (Whittier Tunnel) into the world’s only dual-use highway/railroad tunnel with one way reversible highway traffic.

    This unique project incorporated many elements that had never been used before in tunnels.

    The primary objective of this research project is to identify the problems affecting the train signal and the unique rail systems and

    drainage. The problems identified during the tunnel evaluation included: 1) progressive failure of the train signal system; 2) subsurface

    drainage; 3) drainage from the tunnel crown; 4) settlement of invert panels; 5) cracks in the precast concrete panels; 6) possible

    corrosion of the rail/panel connections, and 7) possible corrosion of the rebar in the invert panels.

    This report recommends the development of three CIP projects to extend the performance life of the tunnel: 1) Replace Track Circuit

    System (TCS) with an axle counter system for train detection in the Whittier Tunnel; 2) Drainage Improvements to install additional

    water control systems in the tunnel crown and modifications to the existing water control system; and 3) Invert Panel Preservation

    Project to replace the asphalt in the rail insert.

  • Funding:
    AKSAS #61862/T2-12-07
    Federal # RI-4000(116)
  • Supporting Files:
    No Additional Files
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