Crashworthy Perforated Square Steel Tube (PSST) Mailbox Support

Nebraska Department of Transportation (NDOT) desires that the mailbox support be updated to meet Manual for Assessing Safety Hardware (MASH) 2016 TL-3 safety performance criteria. Very few mailbox supports have been evaluated according to MASH TL-3 specifications. The Texas A&M Transportation Institute (TTI) evaluated locking architectural mailboxes on thin-wall, steel-tube supports to MASH TL-3 (TTI Report No. 9-1002-12-9). A single-mailbox mount was tested and was successful. Two multiple-mailbox (combined standard and locking architectural mailboxes) mounts were tested and both configurations failed to meet MASH TL-3. The mailbox support for multiple mailboxes was subsequently redesigned and resulted in successful MASH TL-3 tests. Due to the limited number of tested mailbox supports, NDOT desired to design and evaluate a MASH TL-3 mailbox support.


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    • Status: Completed
    • Funding: $164,927.00
    • Sponsor Organizations:

      Nebraska Department of Transportation

      1500 Nebraska 2
      Lincoln, NE  United States  68502
    • Project Managers:

      Halsey, Lieska

    • Principal Investigators:

      Bielenberg, Robert

    • Start Date: 20200701
    • Expected Completion Date: 20230531
    • Actual Completion Date: 20230531

    Subject/Index Terms

    Filing Info

    • Accession Number: 01735891
    • Record Type: Research project
    • Source Agency: Nebraska Department of Transportation
    • Files: RIP, STATEDOT
    • Created Date: Apr 7 2020 9:41AM