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Title: Thrie Beam Guide Rail
Date of Survey: 9/26/2016
Survey Detail/Results: The New Jersey Department of Transportation is interested in learning which other states use a NCHRP 350 TL-4 crash tested modified thrie beam guide rail and dual faced modified thrie beam guide rail, see attached details, on their roadways.

Please forward the survey below to the appropriate person in your department responsible for guide rail standards and/or guide rail design.
1. Does your state use this or a similar modified thrie beam guide rail design? (See the attached drawings)

2. With the FHWA/AASHTO Manual for Assessing Safety Hardware (MASH) update in mind, it’s estimated that two tests are needed to ensure that the modified thrie beam and dual faced modified thrie beam design is MASH TL-3 compliant.

If your state uses this design, would your DOT have interest in coordinating efforts to fulfill these testing requirements?

If so, please provide contact information.

Bureau, Section or Unit:
Phone number:
Email address:

Thank you for your time. We appreciate any information you can share related to this topic.

Survey results are available in the following document(s):
Contact Information: This survey was conducted by New Jersey DOT
Camille Crichton-Sumners
Manager, Bureau of Research
1035 Parkway Avenue
Trenton, New Jersey 08625
United States
Phone: 609-530-5966
E-Mail Address: