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FHWA Highway Safety Programs

Archived Hardware Eligibility Letters – NCHRP 350

These letters are archived and are posted for "historical and research purposes only" per the sunset dates in the AASHTO/FHWA Joint Implementation Agreement and exceptions to these dates as posted on the AASHTO Committee on Design website.

Letter Date Testing Manufacturer Hardware Type Device Description
B-145 NCHRP 350 Nebraska Department of Roads Longitudinal Barriers and Bridge Rails Test Level 5 (TL- 5) Bridge Rail
B-137B NCHRP 350 Gibraltar Longitudinal Barriers and Bridge Rails Alternative Post Spacings
WZ-225 NCHRP 350 John Thomas Inc. Work Zone Devices Dura Curb
WZ-224 NCHRP 350 Traffix Devices Work Zone Devices Water Wall
B-85D NCHRP 350 Trinity Longitudinal Barriers and Bridge Rails Modified King Block
CC-87A NCHRP 350 EASI Barrier Terminals and Crash Cushions Modified Anchor Design
B-144 NCHRP 350 LifeNet Softwalls, LLC Longitudinal Barriers and Bridge Rails Recyled Tire Barrier
CC-26I NCHRP 350 EASI Barrier Terminals and Crash Cushions Modified Anchor Design
SS-136 NCHRP 350 Designovations Sign Supports, Mailboxes, and Delineator Posts Modifications to Designovation Breakaway Device, for sizes 2 1/2 inches and smaller.
WZ-226 NCHRP 350 Plasticade Products Work Zone Devices Plasticade and Fibercade