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Two Test Level 4 Bridge Railing and Transition Systems for Transverse Glue-Laminated Timber Decks

REPORT NUMBER

TRP-03-071-01

AUTHORS

Karla Lechtenberg, Ronald Faller, Michael Ritter, Barry Rosson, Michael Fowler, Eric Keller

PUBLICATION DATE

2002-01-30

ABSTRACT

Two bridge railing and approach guardrail transition systems for use on bridges with transverse glue-laminated timber decks were developed and crash tested for use on high volume or high speed roadways. The bridge railing and transition systems were 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. The first railing system was constructed with glulam timber components, whereas the second railing system was configured with steel hardware. Eight full-scale crash tests were performed, and the bridge railing and transition systems were acceptable according to current safety standards.

KEYWORDS

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

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