Environmental constraints to a large degree controlled both design and construction of the 22.5-km (14-mile) long segment of I-70 through Vail Pass in Colorado. An interdisciplinary team composed of engineers, ecologists, aquatic and wildlife biologists, and architectural and landscape consultants evaluated every aspect of the highway with regard to its environmental impact from the determination of the alignment to the color of the concrete structures. A variation of the Design Alternative Ration Evaluation system was used to quantify eight environmental factors, and these factors were then used to rank alternative alignments. After the alignment was selected, measures were taken to mitigate adverse environmental consequences associated with highway construction. In some instances, the amount of terrain disrupted was reduced by substituting a structure for a cut or a fill. In other cases, terrain was restored by landscaping methods. Environmental constraints imposed on the project design made it necessary to adopt innovative design concepts. The principal environmental constraints and the solutions that resulted from the use of innovative design concepts are examined. (Author)

Media Info

  • Media Type: Print
  • Features: Figures; Maps; Photos; References;
  • Pagination: pp 2-6
  • Monograph Title: Engineering solutions to environmental constraints: I-70 over Vail Pass
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00303922
  • Record Type: Publication
  • ISBN: 0309029678
  • Files: TRIS, TRB
  • Created Date: Apr 22 1980 12:00AM