The unusually difficult conditions encountered in the grading of a 22-mile stretch of the Interstate 40 are described and the excellent progress that has been made is attributed to the persistence of the contractors and their ability to adapt conventional equipment and standard methods to unusual conditions. The grading required an average excavation of a million cu yd of material (90 percent rock) for every mile of road throught the entire project. The extremely rough terrain has required the pioneering of a path for equipment along the almost vertical sides. May of the side cuts and their adjacent side cut fills measure more than 600 ft in vertical distance. Problems are also posed by the weather and the fact that the road crosses a major fault zone and slides are a constant danger. Also, the route parallels streams that must be kept open and protected from slides. Problems encountered in surveying are described. The awarding of the contracts for the construction are reviewed and some major slides in the area are described. The manner in which contractors resolved the problem of access is described as well as some typical work of the contractor. A five span bridge and a 557-ft-long culvert were the major structures contained in this project.

  • Availability:
  • Corporate Authors:

    McGraw-Hill, Incorporated

    330 West 42nd Street
    New York, NY  United States  10036
  • Publication Date: 1965-8

Media Info

  • Features: Figures; Photos;
  • Pagination: p. 28-33
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00083776
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 29 1975 12:00AM