Investigation of Load-Path Redundancy in Aging Steel Bridges- Phase 2

A key factor affecting the resiliency of transportation infrastructure is aging. Furthermore, the current age of the nation’s transportation infrastructure relative to the financial resources available for infrastructure investments causes aging to be one of the biggest challenges facing civil engineers in the coming years. As a result of these demands, the project entitled "Investigation of Load-Path Redundancy in Aging Steel Bridges" was initiated in 2010 to systematically quantify the actual system capacity of steel bridges as a function of deterioration of the concrete bridge deck. The aim of the proposed work is to extend these results into a rating procedure that can be readily applied by bridge owners. This will be accomplished by first incorporating the influences of load path redundancy into the existing American Association of State Highway Transportation Officials (AASHTO) rating format and then refining this approach based on the aging effects that were quantified in Phase 1. The ultimate result of the project is a systematic and quantified procedure that will allow the aging structures that are in greatest need of rehabilitation or replacement to be better identified.


  • English


  • Status: Active
  • Contract Numbers:


  • Sponsor Organizations:

    Research and Innovative Technology Administration

    Department of Transportation
    1200 New Jersey Avneue, SE
    Washington, DC  United States  20590
  • Project Managers:

    Tucker-Thomas, Dawn

  • Performing Organizations:

    Delaware Center for Transportation

    University of Delaware
    Newark, DE  United States  19716
  • Principal Investigators:

    McConnell, Jennifer

  • Start Date: 20110901
  • Expected Completion Date: 0
  • Actual Completion Date: 20120831
  • Source Data: RiP Project 28651

Subject/Index Terms

Filing Info

  • Accession Number: 01463449
  • Record Type: Research project
  • Source Agency: Delaware Center for Transportation
  • Contract Numbers: DTRT06-G-0026
  • Files: UTC, RiP, USDOT
  • Created Date: Jan 3 2013 2:23PM