USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation
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 Sort ascending Testing Manufacturer Hardware Type Device Description
CC-94A NCHRP 350 Trinity Highway Products Barrier Terminals and Crash Cushions modify ET-2000 Plus to 31” height
B-163 NCHRP 350 S.I. Story Lumber Co. Longitudinal Barriers and Bridge Rails TimBarrier StreetGuard Plus
CC-100 NCHRP 350 Texas Trans. Inst. Barrier Terminals and Crash Cushions modify SRT, to 31” height
SS-152 NCHRP 350 Northwest Pipe Company Sign Supports, Mailboxes, and Delineator Posts Direct bury PSST post into 30" PSST anchor (2.25" post max.)
LS-64 NCHRP 350 Hapco Luminaire Supports Decorative Lighting Poles
SS-153 NCHRP 350 International FiberLok Sign Supports, Mailboxes, and Delineator Posts Composite Fiberglass I-beam Sign support
B-88E NCHRP 350 Safence Longitudinal Barriers and Bridge Rails TL-4 four cable tensioned barrier
CC-78D NCHRP 350 Energy Absorption Systems, Inc. Barrier Terminals and Crash Cushions Safe-Stop trailer TMA
SS-151 NCHRP 350 SHUR-TITE Products Sign Supports, Mailboxes, and Delineator Posts Mailbox Support
CC-57B NCHRP 350 Energy Absorption Systems Barrier Terminals and Crash Cushions QUADGUARD Elite system 8 bays