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 |
|---|---|---|---|---|---|
| SS-83 | NCHRP 350 | Marion Steel | Sign Supports, Mailboxes, and Delineator Posts | Modified Rib-Bak - Canadian post section | |
| SS-82 | NCHRP 350 | St. Louis Steel | Sign Supports, Mailboxes, and Delineator Posts | Perforated square steel tube sign suppports. | |
| B-56 | NCHRP 350 | David Hubbell | Longitudinal Barriers and Bridge Rails | IRONWOOD Guardrail-aesthetic timber/steel rail | |
| CC-57A | NCHRP 350 | J.M. Essex,EASI | Barrier Terminals and Crash Cushions | 7-bay QuadGuard Elite at test level 2 @ TL-2 | |
| CC-35C | NCHRP 350 | Energy Absorption | Barrier Terminals and Crash Cushions | 3-bay QUADGUARD at test level 2 @ TL-2 | |
| CC-50A | NCHRP 350 | Dean Alberson | Barrier Terminals and Crash Cushions | Name change to Medium REACT w/2743 or 3048mm widths) @ TL-3 | |
| WZ-16 | NCHRP 350 | Bent Manufacturing | Work Zone Devices | ULTRA vertical panel with light | |
| CC-51A | NCHRP 350 | King Mak, TTI | Barrier Terminals and Crash Cushions | Improved Slotted Rail Terminal (ISRT-4) @ TL-3 | |
| WZ-13 | NCHRP 350 | Eastern Metal/ USA Sign | Work Zone Devices | Melba Barricade: Large Vertical Panel Assemblies, Type I Barricades, Type II Barricades, Eastern Metal: Super Flex Compact Sign Stands, Interstate Sign Stands, Compact Non-Flexing Aluminum Sign Stands | |
| WZ-12 | NCHRP 350 | Flasher Handling | Work Zone Devices | Air Flow Roll Up Sign Unit, Bantam II portable sign, Polypropylene sign Panels on Drums |