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-25 | NCHRP 350 | Utah DOT | Luminaire Supports | Four-bolt luminaire slip base. | |
| LS-24 | NCHRP 350 | Akron Foundry | Luminaire Supports | Revisions to TB-1, TB-2, TB-3 Cast aluminum transformer bases | |
| SS-25 | NCHRP 350 | Sign Supports, Mailboxes, and Delineator Posts | a. Single or dual 4"x4" wood, undrilled b. Single 6"x8" wood with 3.0" holes c. Single 6"x6" wood with 2.0" holes d. Single 4"x6" wood with 1.5" holes e. Dual W6x12 steel post on slip base (up to 18 ppf for dual supports OK |
||
| SS-24 | NCHRP 350 | Unistrut Corp. | Sign Supports, Mailboxes, and Delineator Posts | Triangular Slip Bases for Square Tube Sign Supports. | |
| CC-15 | NCHRP 350 | --- | Barrier Terminals and Crash Cushions | Eccentric Loader Terminal (ELT) (Operational) Modified Eccentric Loader Terminal (MELT) (Operational) | |
| SS-23 | NCHRP 350 | Sign Supports, Mailboxes, and Delineator Posts | New Jersey Breakaway Couplings | ||
| LS-23 | NCHRP 350 | PrecisionForm | Luminaire Supports | Revision to PF200-1 breakaway coupler. | |
| SS-22 | NCHRP 350 | Trus Joist Corporation | Sign Supports, Mailboxes, and Delineator Posts | Type "L" MICRO=LAM with revised saw cut | |
| SS-21 | NCHRP 350 | Minute Man Breakaway | Sign Supports, Mailboxes, and Delineator Posts | MMB-1HD breakaway device with two 3 #/ft flanged channel "U" posts in both strong and weak soil. | |
| B-15 | NCHRP 350 | Roadway Safety Services | Longitudinal Barriers and Bridge Rails | Dragnet Vehicle Arresting System |