Determine Feasibility and Methodologies of Using Structural Data From Traffic Speed Deflection Devices in Network-Level Treatment Decision Making

Traffic Speed Deflection Devices (TSDD) non-destructively measure structural condition while traveling at traffic speeds. Advancements in TSDD’s have enabled these evaluations to be made with the benefit of reducing safety hazards associated with traditional stop and go Falling Weight Deflectometer (FWD) devices. TxDOT is an active participant in the Transportation Pooled Fund TPF-5(385) “Pavement Structural Evaluation with Traffic Speed Deflection Devices”. As a participant, TxDOT has collected more than 1000 miles of TSDD data in several TxDOT Districts and is expected to continue to collect TSDD data for the next three (3) years. Recent interest from TxDOT Districts on using continuous structural data in network level treatment decisions has necessitated the need to verify TSDD measurements and provide guidelines and analysis methodologies to implement structural condition data for both network and project level pavement management applications. Incorporating a structural condition index into network level decisions has been a goal of TxDOT for over 30 years with the objective of providing TxDOT Districts a comprehensive integrated assessment of both visual and structural condition. Use of this tool shall provide TxDOT Districts with what level of pavement rehabilitation treatment is required as they develop their 4-year plans.


  • English


  • Status: Active
  • Funding: $449,941
  • Contract Numbers:


  • Sponsor Organizations:

    Texas Department of Transportation

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

    Texas Department of Transportation

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

    Dassi, Martin

  • Performing Organizations:

    Texas A&M Transportation Institute

    Texas A&M University System
    3135 TAMU
    College Station, TX  United States  77843-3135
  • Principal Investigators:

    Scullion, Tom

  • Start Date: 20210901
  • Expected Completion Date: 20240831
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01782694
  • Record Type: Research project
  • Source Agency: Texas Department of Transportation
  • Contract Numbers: 0-7107
  • Files: RIP, STATEDOT
  • Created Date: Sep 23 2021 10:11AM