Review and Assessment of Past MnDOT Bridge Barrier Types

Many Minnesota bridges have older barriers or parapets that met the design code at the time of construction in the 1950's. Many of these bridge rails no longer meet current strength and performance requirements. As MnDOT begins to rehabilitate older existing bridges, a determination needs to be made as to whether the existing older barrier type can remain in place or if it should be rehabilitated or replaced with a newer style barrier. The first step is to document the time periods and number of structures in the state that have post & beam, type G, type J, and type F barriers. Then evaluations of the structural strength and crashworthiness of each barrier type will be performed. Following that, recommended guidance and evaluation criteria will be developed to determine when an existing barrier should be upgraded or replaced.


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  • Status: Completed
  • Funding: $175,304.00
  • Contract Numbers:

    1003324 WO#4

  • Sponsor Organizations:

    Minnesota Department of Transportation

    395 John Ireland Boulevard
    St Paul, MN  United States  55155
  • Performing Organizations:

    Texas A&M Transportation Institute

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

    Williams, William

  • Start Date: 20180727
  • Expected Completion Date: 20200731
  • Actual Completion Date: 0

Subject/Index Terms

  • TRT Terms: Bridges; Parapets
  • Subject Areas: Bridges and other structures;

Filing Info

  • Accession Number: 01667462
  • Record Type: Research project
  • Source Agency: Minnesota Department of Transportation
  • Contract Numbers: 1003324 WO#4
  • Files: RIP, STATEDOT
  • Created Date: Apr 26 2018 11:23AM