Safety grates for cross-drainage culverts

Dean L. Sicking, Robert W. Bielenberg, John R. Rohde, John D. Reid, Ronald K. Faller, Karla A. Polivka

Research output: Contribution to journalArticlepeer-review


This paper presents findings of an investigation of the safety performance of culvert safety grates when installed on slopes as steep as 3:1, as recommended by the AASHTO Roadside Design Guide (RDG). LS-DYNA modeling was used to identify critical impact conditions for roadside culvert grates installed on 3:1 slopes. Two full-scale vehicle crash tests were conducted under the guidelines of NCHRP Report 350 on a 6.4- × 6.4-m (21-×21-ft) culvert safety grate Installed on a 3:1 slope. The full-scale crash tests demonstrated that the AASHTO RDG recommended safety grates provide acceptable safety performance when installed on 3:1 slopes.

Original languageEnglish (US)
Pages (from-to)67-73
Number of pages7
JournalTransportation Research Record
Issue number2060
StatePublished - 2008

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanical Engineering

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