The objective of this project was to develop details for MASH compliance using computer simulations of the New England steel bridge rail configurations including transitions. The researchers uses LRFD strength calculations and finite element analysis (FEA) computer simulation to evaluate the crash performance of three NETC bridge rail and approach guardrail transition (AGT) designs. The impact conditions and assessment procedures conformed to the specifications in MASH for TL-3 or TL-4 (as appropriate) and included evaluations of structural capacity of the railing, risk of occupant injury, and vehicle stability during impact and redirection.
The results of this project provide evidence of the crashworthiness of the NETC designs, which will aid the engineers of the New England State transportation agencies in making informed decisions on the continued use of these systems.
Technical Committee Members
- Jeff Folsom (TC Chair), Maine Department of Transportation
- David Kilpatrick, Connecticut Department of Transportation
- Alex Bardow, Massachusetts Department of Transportation
- Robert Landry, New Hampshire Department of Transportation
- Michael Savella, Rhode Island Department of Transportation
- Jim Lacroix, Vermont Agency of Transportation
AC Liaison, Dale Peabody, Maine Department of Transportation
Project Coordinator, Kirsten Seeber, CTC & Associates
VT AOT S-360 series standards for the NETC 2-Rail bridge rail and approach rail are being updated to reflect the findings in the study by VT AOT. S-361 series NETC 3-Rail bridge rail and approach rail are being developed. NETC 20-1: In-Service Performance Evaluation of NETC Bridge Railings is a follow up to this project.