Seismic Vulnerability & Emergency Response Analyses of UDOT Lifelines

Earthquakes damage transportation infrastructure. In addition to replacement and repair costs for damage to transportation structures, large earthquakes can increase time delays resulting from a network component's loss of function. Damage to the network can severely disrupt traffic flows for several months or years. The Utah Department of Transportation (UDOT) recognizes the risks posed by these hazards and initiated this analysis. Impacts on road users can be estimated in terms of user costs from travel time delay. This report presents estimated traffic disruption user delay costs resulting from two earthquake scenarios in Utah. The VISUM traffic macro-simulation model was used to estimate the delay-based user costs. Road segments, which are vulnerable yet critical to detour traffic following an earthquake, are prioritized for rehabilitation. The calculated user costs show that the Taylorsville Scenario would incur $65 million, which is significantly lower than the Wasatch Scenario of $1,312 billion. Links that are susceptible to damage in one scenario, but critical in carrying detour traffic for the other scenario, are defined as lifelines. A shortlist of lifelines is provided for each earthquake scenario with detailed information, including names, directions, and addresses.

• Record URL:
  https://www.ugpti.org/resources/reports/details.php?id=644
• 
• Supplemental Notes:
  • This research was sponsored by the U.S. Department of Transportation, University Transportation Centers Program.
• Corporate Authors:

  University of Utah, Salt Lake City

  Department of Civil and Environmental Engineering
  122 South Central Campus Drive
  Salt Lake City, UT  United States  84112

  Utah Department of Transportation

  4501 South 2700 West
  Salt Lake City, UT  United States  84114-8410

  Mountain-Plains Consortium

  North Dakota State University
  Fargo, ND  United States  58108
• Authors:
  • Stevanovic, Aleksandar
  • Nadimpalli, Bhagavan
• Publication Date: 2010-4

Language

• English

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; References; Tables;
• Pagination: 80p

Subject/Index Terms

• TRT Terms: Earthquakes; Hazards and emergency operations; Impact studies; Lifelines; Traffic delays; Traffic simulation; Travel time
• Uncontrolled Terms: Traffic disruption; User costs
• Geographic Terms: Utah
• Subject Areas: Highways; Planning and Forecasting; Security and Emergencies; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01156664
• Record Type: Publication
• Report/Paper Numbers: MPC Report No. 10-217
• Files: UTC, TRIS, STATEDOT
• Created Date: May 14 2010 4:16PM