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Development of the GC-8000 Bridge Railing and Transition

REPORT NUMBER

TRP-03-161-06

AUTHORS

Rebecca Hitz, Karla Lechtenberg (Polivka), Ronald Faller, Michael Ritter, Barry Rosson, Jim Holloway

PUBLICATION DATE

2006-05-02

ABSTRACT

One bridge railing and approach guardrail transition system for use on bridges with longitudinal glue-laminated timber decks was developed and crash tested for use on higher-service-level roadways. The bridge railing and transition system was subjected to full-scale crash tests in accordance with the Test Level 4 (TL-4) safety performance criteria presented in NCHRP Report No. 350, Recommended Procedures for the Safety Performance Evaluation of Highway Features as well as the MSL-2 criteria found in NCHRP Report No. 230, respectively. Four full-scale crash tests were performed - three on the bridge railing and one on the approach guardrail transition. The bridge railing and transition systems were found to be acceptable according to current safety standards.

KEYWORDS

Highway Safety, Longitudinal Barrier, Bridge Railing, Approach Guardrail Transition, Roadside Appurtenances, Crash Test, Compliance Test, Timber Bridge