Develop Bridge Weigh-in-Motion Approach to Measure Live Loads on Texas Highways

The primary objective for bridge weigh-in-motion (B-WIM) systems is to characterize the truck loading on a given corridor. B-WIM (compared to pavement weigh-in-motion) is potentially less disruptive to traffic, more durable, more economical, safer to install and able to produce accurate traffic data. This project aims to realize these potential advantages through the development of a B-WIM system that includes extensive experimental testing. The system will identify the truck gross weight, axles (weights, number and spacing), speed and vehicle classification. A secondary objective of B-WIM is to evaluate the bridge itself. The research team will develop an approach to identify bridge parameters such as distribution factors, percent composite action, dynamic impact factor, and stress cycles from B-WIM data. The Performing Agency will include site-specific load ratings on the final bridge evaluations. The overall purpose of B-WIM is to aid the Texas Department of Transportation (TxDOT) with future decisions. The major technical objectives of this research are to: (1) Develop and finalize the B-WIM approach through preliminary experimental testing. (2) Select three (3) bridges to install B-WIM systems along crucial corridors. (3) Install the B-WIM system along three in-service bridges, which includes calibration of each setup. (4) Conduct traffic data analysis and a validation study. (5) Perform an evaluation of each in-service bridge.


  • English


  • Status: Completed
  • Funding: $414611
  • Contract Numbers:


  • Sponsor Organizations:

    Texas Department of Transportation

    125 E. 11th Street
    Austin, TX  United States  78701-2483

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Managing Organizations:

    Texas Department of Transportation

    11th and Brazos Streets
    Austin, TX  United States  78701
  • Project Managers:

    Dassi, Martin

  • Performing Organizations:

    Texas A&M Transportation Institute (TTI)

    400 Harvey Mitchell Parkway South
    Suite 300
    College Station, TX  United States  77845-4375
  • Principal Investigators:

    Yarnold, Matthew

  • Start Date: 20191021
  • Expected Completion Date: 20221031
  • Actual Completion Date: 20221031
  • Source Data: TxDOT Research Library

Subject/Index Terms

Filing Info

  • Accession Number: 01743929
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 0-7038
  • Files: RIP, STATEDOT
  • Created Date: Jun 24 2020 3:37PM