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Straight Creek Tunnel

Colorado, United States

Learn about this topic in these articles:

construction

  • railroad tunnel
    In tunnels and underground excavations: Ground support

    …1971, for example, on the Straight Creek interstate highway tunnel in Colorado, a very complex pattern of multiple drifts was found necessary to advance this large horseshoe-shaped tunnel 42 by 45 feet high through a weak shear zone more than 1,000 feet wide, after unsuccessful trials with full-face operation of…

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