In-Service Performance Evaluation (ISPE) of New England Transportation Consortium (NETC) Steel Bridge Railings
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2023-10-27
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Edition:Final Report
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Abstract:The predominate bridge railing used in the New England States are two-, three-, and four-bar steel post-and-beam designs developed and crash tested under the auspices of the New England Transportation Consortium (NETC). These bridge railing designs are commonly referred to as NETC bridge railings. The crash tests were performed in compliance with the AASHTO Guide Specification for Bridge Railings Performance Level 2 (GSBR PL2) and/or NCHRP Report 350 (R350) test procedures. (AASHTO 1989, Ross, Sicking et al. 1993) These bridge rail systems have been used in the New England states for more than 20 years. According to the Joint Agreement between AASHTO and FHWA, each state is required to specify MASH compliant bridge rails for new and full replacements on the National Highway System (NHS) with contract letting dates after December 31, 2019. In accordance with those requirements, a project was recently completed to evaluate the crash performance of the NETC bridge rail systems under the MASH criteria using finite element analysis. (Plaxico and Ray 2020) The study concluded that the existing NETC bridge railing designs would meet the new crash testing standards, but also recommended minor design modifications to further improve performance.
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