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-28 | NCHRP 350 | Sign Supports, Mailboxes, and Delineator Posts | 3 ½" Diam. Thin Walled Aluminum Tube Single Spliced (6" c-c) Marion Steel or Franklin Steel 4 ppf U-channel post |
||
| SS-27 | NCHRP 350 | Montana D.O.T. | Sign Supports, Mailboxes, and Delineator Posts | Round wood post supports | |
| B-19 | NCHRP 350 | Nat. Ready Mix Concrete Assn. | Longitudinal Barriers and Bridge Rails | Ontario "Tall Wall" Concrete Median Barrier | |
| B-18 | NCHRP 350 | Pelco Products | Longitudinal Barriers and Bridge Rails | PB-5300 Ser. Cast Aluminum Traffic Signal Base. | |
| SS-26 | NCHRP 350 | Unistrut Corp. | Sign Supports, Mailboxes, and Delineator Posts | Telespar square perf. tube small sign supports without sleeve around base post. | |
| B-17 | NCHRP 350 | (Minute Memo to Regions) | Longitudinal Barriers and Bridge Rails | Constant Slope Concrete Median Barrier. | |
| SS-13C | NCHRP 350 | Marion Steel | Sign Supports, Mailboxes, and Delineator Posts | Project by project acceptance of Florida's splice in both soil types | |
| SS-13B | NCHRP 350 | Marion Steel | Sign Supports, Mailboxes, and Delineator Posts | Permit threaded spacers to lap splice design | |
| CC-16 | NCHRP 350 | Syro Steel Co. | Barrier Terminals and Crash Cushions | Advanced Dynamic Impact Extension Module (ADIEM), terminal only. | |
| B-16 | NCHRP 350 | Barrier Systems, Inc. | Longitudinal Barriers and Bridge Rails | Quickchange Moveable Median Barrier for use in permanent installations |