Hybrid A-Frame Micropile/MSE Wall with Impact Barrier, Unique Design and Construction Approach

Well-designed impact road barriers and shoulder areas are critical components of protecting travelers from accidents on Colorado's mountain roadways. Many roads in the mountains were built on steep terrain by cutting existing rock material and filling at steep slopes with limited shoulder room. While MSE walls have been routinely used in Colorado, their effectiveness is not clear when they are placed on narrow steep cuts. Installation of micropiles in the form of A-Frames into MSE walls to provide lateral impact resistance has the potential to be a unique engineering solution for Colorado's mountain road barriers. This study will investigate the possibility of using an A-Frame micropile-MSE wall system as an effective alternative for mountainous roadway construction.


    • English


    • Status: Active
    • Contract Numbers:


    • Sponsor Organizations:

      Colorado Department of Transportation

      4201 East Arkansas Avenue
      Denver, CO  United States  80222
    • Project Managers:

      Khan, Aziz

    • Start Date: 20120322
    • Expected Completion Date: 0
    • Actual Completion Date: 20141215
    • Source Data: RiP Project 31779

    Subject/Index Terms

    Filing Info

    • Accession Number: 01503808
    • Record Type: Research project
    • Source Agency: Colorado Department of Transportation
    • Contract Numbers: 80.25
    • Files: RiP, STATEDOT
    • Created Date: Jan 18 2014 1:00AM