AVALANCHES ON THE NORTH CASCADES HIGHWAY (SR-20) SUMMARY REPORT

SNOW AND AVALANCHE CLIMATE VARIES WIDELY ACROSS THE NEW NORTH CASCADE HIGHWAYS, STATE ROUTE 20. IN ORDER FOR THE HIGHWAY DEPARTMENT TO PLAN FOR MAINTENANCE OF THE HIGHWAY INCLUDING PREDICTION AND CONTROL OF THE AVALANCHE HAZARDS, IT WAS NECESSARY TO INVENTORY THE HAZARDS AND DEVELOP A CONTROL PLAN. APPLICATION OF AVALANCHE DEFENSE STRUCTURES, PROCEDURES FOR CLEARANCE, AND CONTROL OF OPERATIONS ARE CRITICAL PORTIONS OF THE MAINTENANCE PROGRAM. SEVERAL ALTERNATE OPERATIONAL LEVELS WITH COST/BENEFIT ANALYSIS ARE CONTAINED IN THE FINDINGS. /FHWA/

• Record URL:
  http://www.wsdot.wa.gov/research/reports/fullreports/008.1.pdf
• 
• Supplemental Notes:
  • Contract NO: Y-1301
• Corporate Authors:

  University of Washington, Seattle

  Seattle, WA  United States  98195

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Lachappelle, E R
  • Brown, C B
• Publication Date: 1971-9

Media Info

• Pagination: 72 p.

Subject/Index Terms

• TRT Terms: Avalanches; Benefit cost analysis; Forecasting; Highway maintenance; Snow
• Old TRIS Terms: Control structures
• Subject Areas: Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 00218087
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: Intrm Rept
• Files: TRIS, USDOT
• Created Date: Aug 15 1973 12:00AM