Calibration of Bridge Element Based Deterioration Models

While Texas has consistently ranked among the top two states in terms of overall bridge conditions, the majority of the funding (Category 6) earmarked for bridge preservation activities (Highway Bridge Program) have historically been allocated to projects using a “worst first” strategy, in which bridges in the poorest condition are prioritized for replacement highest under the HBP. For the last few years, the overall network bridge condition, expressed in terms of the performance measure “percent of bridges in good or better condition” has entered a plateau period, with no significant change in the percent of bridges in good or better condition. This new period of flat performance, coupled with the enormous size of the Texas bridge inventory and exacerbated by the uneven age distribution of Texas bridges, indicates it is time for TxDOT to employ a more refined approach to bridge preservation activities, one that goes beyond a “worst first” mentality and instead, strives to find the optimum mix of preservation treatments which will result in a network where bridge conditions are managed over the long-term, incorporating life cycle planning activities into the process. In order to implement a life cycle planning methodology at the network level for Texas bridges, the first crucial step will be development of deterioration models for Texas bridges. The desired output of this project is a set of deterioration models for groupings or families of bridges, taking into account NBI condition data, geospatial location, amount of truck traffic, and other relevant variables which may be revealed when analyzing the data, which will predict the probability of a bridge transitioning from one condition state to another due to deterioration over a specified time period.


  • English


  • Status: Completed
  • Funding: $253363
  • Contract Numbers:


  • Sponsor Organizations:

    Texas Department of Transportation

    125 E. 11th Street
    Austin, TX  United States  78701-2483
  • Project Managers:

    Schwerdt, Tom

  • Performing Organizations:

    University of Texas at San Antonio

    One UTSA Circle
    San Antonio, TX  United States  78249
  • Principal Investigators:

    Weissmann, Jose

  • Start Date: 20180901
  • Expected Completion Date: 20200831
  • Actual Completion Date: 20200831

Subject/Index Terms

Filing Info

  • Accession Number: 01690710
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 0-6979
  • Files: RIP, STATEDOT
  • Created Date: Jan 9 2019 5:29PM