The long welded rails were used in the recent renewal of four miles of track in the Cascade Tunnel. The tunnel, which is 7 miles 1,397 yd. long carries the main line of the Great Northern Railway from St. Paul to the Pacific coast through the Cascade Mountains. The railway was laid with 110-lb rails, rolled to the standard American length of 1,326 feet de-stressed by heat treatment, tested magnetically for flaws, cleaned, and given a coat of anti-corrosive paint. The new rails are secured by four cut spikes in every baseplate. The rails are anchored by 48 grip-type anchors in each 39-foot panel. To provide anchorage in both directions, these are applied in pairs for each rail against both faces of alternate sleepers. Insulated joints are inserted in the track at intervals of one mile.

  • Corporate Authors:

    Temple Press Limited

    161-166 Fleet Street
    Longon EC4,   England 
  • Publication Date: 1949-11-11

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Filing Info

  • Accession Number: 00037889
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 8 1994 12:00AM