On March 6, 2000, a rockslide damaged Oahu's Kamehameha Highway, and Hawaii's state geologist determined that the slope above the road was unstable and unsafe for motorists to pass below. After much debate, the Hawaii State Department of Transportation (DOT) decided to move the shoulder of the highway 20-30 ft away from the cliff and to create a temporary bypass. Contractors constructed a temporary two-lane road using geotextile fabric and a cellular confinement system. The 24-ft wide, 1,000-ft long bypass was constructed by placing a layer of geotextile directly onto the sand and then installing two 8-in. layers of the honeycomb-like confinement system. Plastic clips attached to 24-in. rebar anchored the system to the sand, and 3 in. of imported crushed coral covered the road surface. The bypass was completed March 18 and used for 90 days while the highway was widened and moved away from the cliff. Instead of using explosives, the DOT hired professional rock climbers to remove loose rock from the cliff, and a 10-ft fence was installed beside the new road to catch future falling rocks.

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  • Corporate Authors:

    Intertec Publishing Corporation

    6151 Powers Ferry Road, NW
    Atlanta, GA  United States  30339-2941
  • Publication Date: 2000-9


  • English

Media Info

  • Features: Photos;
  • Pagination: p. 16
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00800631
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 18 2000 12:00AM