DEEP FOUNDATION REDESIGNS IN DIFFICULT GEOLOGY: GLENWOOD CANYON, COLORADO

The ribbon of concrete and steel that winds 20 km Interstate Highway 70 through steeply gorged Glenwood Canyon is founded on a diverse assortment of materials. Precambrian basement rocks of igneous and metamorphic nature provide solid bearing but are also overlain with colluvium and alluvial deposits of the Colorado River. The presence of highly compressive silts and clays add to the challenges of foundation design and construction. Despite the existence of extensive preliminary geologic information, the Hanging Lake Viaduct project featured unforeseen subsurface conditions that further challenged the COLORADO DEPARTMENT OF TRANSPORTATION (CDOT) and their designers and contractors. Contract administration practices, tools and techniques that were employed to mitigate potentially costly delay claims are presented. (A) For the covering abstract see IRRD 873033.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 37-42

Subject/Index Terms

Filing Info

  • Accession Number: 00712373
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 90-5410-343-4
  • Files: ITRD
  • Created Date: Oct 24 1995 12:00AM