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Trinity T-31 Guardrail

Trinity's proprietary T-31 Steel Guardrail is a strong post W-beam system that has been successfully crash-tested to both NCHRP Report 350 TL-3 and the proposed "350 update" criteria.


  • Strong posts with weakening holes at the ground line.
  • No offset blocks required.
  • Countersunk-Head Bolts and Flange Protectors.
  • Mid-span splices between adjacent posts.
  • NCHRP Report 350 Test Level 3 compliant.
  • Meets the crash tested to proposed "350 update" criteria.
  • Reduced site grading by eliminating spacer block.
  • Single-face or Double-Face (median) application.
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