Skip Top Navigation

Research Reports

Storm-Related Closures of I-5 and I-90: Freight Transportation Economic Impact Assessment Report Winter 2007-2008, Methodology Appendix

Description: The Washington Department of Transportation (WSDOT), under contract with the Social & Economic Sciences Research Center (SESRC) at Washington State University, conducted a study that designed and implemented a mixed-mode (telephone and Internet) survey of Washington State freight-dependent businesses and the trucking industry. This survey was used to determine the economic impact on the trucking industry of the I-5 and I-90 emergency closures that occurred during winter 2007-2008. This survey was also used to profile and quantify the economic impacts of road closures caused by natural interruptions. Three types of economic impacts were quantified:

Direct revenue losses incurred by the freight community.
Additional costs incurred during the closures.
Additional costs incurred after the closures.

This appendix details the methodology used to assess the economic impacts of the I-5 and I-90 winter storm closures during winter 2007-08.

  • Date Published: September, 2008
  • Publication Number: WA-RD 708.2
  • Last Modified: November 19, 2008
  • Authors: Barbara Ivanov, George Xu.
  • Originator: Washington (State). Department of Transportation. Freight Systems Division
  • # of Pages: 13 p., 486.69 KB (PDF)
  • Subject: Methodology, Surveys, Types of costs, Economic impacts, Weather conditions, Economic analysis, Floods, Snowstorms, Freight traffic, Commodity flow, Travel time, Detours, Trucks, Interstate highways, Freight transportation, Traffic delay.
  • Keywords: Highway closures, economic impact, methodology, freight.
  • Related Publications: Storm-Related Closures of I-5 and I-90: Freight Transportation Economic Impact Assessment Report, Winter 2007-2008 (WA-RD 708.1) ;
    2008 Economic Impact of I-5 & I-90 Highway Closures on Shipping, Freight, and Trucking Businesses: A Telephone and Web Survey--Data Report (WA-RD 708.3) ;
    2008 Economic Impact of I-5 & I-90 Highway Closures on Shipping, Freight, and Trucking Businesses: A Telephone and Web Survey--Graphical Summary (WA-RD 708.4).


This abstract was last modified January 22, 2013