Design Guidelines for TL-3 through TL-5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth (MSE) Retaining Walls

The objective of this research was to develop, in a format suitable for consideration by AASHTO, recommended guidelines for designing roadside barrier systems placed on mechanically stabilized earth (MSE) retaining structures to resist vehicular impact loadings varying from passenger vehicles to heavy trucks. To extend the work done under Project 22-20, this project consisted of engineering analyses, computer modeling, and bogie testing for Test Levels 3 through 5 and included full-scale crash testing of a tractor-van trailer (TL-5) into a barrier placed atop an MSE retaining wall. The guidelines address Test Levels 3 through 5. Specific considerations included defining appropriate design loads, developing procedures for sizing the traffic barrier foundation, and designing the MSE wall when traffic barriers are required.


  • English


  • Status: Completed
  • Funding: $610000
  • Contract Numbers:

    Project 22-20(02)

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway and Transportation Officials (AASHTO)

    444 North Capitol Street, NW
    Washington, DC  United States  20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Bush, Mark

  • Performing Organizations:

    Texas A&M Research Foundation, College Station

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

    Bligh, Roger

  • Start Date: 20100514
  • Expected Completion Date: 20170531
  • Actual Completion Date: 20170531

Subject/Index Terms

Filing Info

  • Accession Number: 01464180
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 22-20(02)
  • Files: TRB, RIP
  • Created Date: Jan 3 2013 2:37PM