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 |
|---|---|---|---|---|---|
| LS-26A | NCHRP 350 | Sherman International | Luminaire Supports | Additional poles accepted | |
| SS-56A | NCHRP 350 | Marion Steel Company | Sign Supports, Mailboxes, and Delineator Posts | Modify design to use "bar spacer" | |
| SS-59 | NCHRP 350 | Chicago Heights Steel | Sign Supports, Mailboxes, and Delineator Posts | Dual 3 ppf u-channel in strong soil | |
| LS-45 | NCHRP 350 | Transpo Industries | Luminaire Supports | Double Neck Pole Safe Coupling for signs and luminaires. | |
| SS-61 | NCHRP 350 | Sign Supports, Mailboxes, and Delineator Posts | Revised Oregon multi-directional slip base | ||
| B-34 | NCHRP 350 | Safety Barrier Systems Guardian | Longitudinal Barriers and Bridge Rails | Temporary Barrier (Conditional TL-3) (Conditional acceptance upgraded to Full) |
|
| B-33 | NCHRP 350 | BGFM Assoc | Longitudinal Barriers and Bridge Rails | Concrete Safety Shape connection to bridge deck | |
| B-32 | NCHRP 350 | Arnold Forest Products | Longitudinal Barriers and Bridge Rails | Round Timber Guardrail Posts TL-3 | |
| CC-31 | NCHRP 350 | Texas A&M (TTI) | Barrier Terminals and Crash Cushions | Slotted Rail Terminals (SRT) for W-beam Guardrail @ TL-3 | |
| SS-60 | NCHRP 350 | Clifford Dent | Sign Supports, Mailboxes, and Delineator Posts | Coupling for sign supports |