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-13A | NCHRP 350 | Marion Steel | Sign Supports, Mailboxes, and Delineator Posts | Clarifies grade of steel to be “SP-80" | |
| CC-12 | NCHRP 350 | Syro Steel Co. | Barrier Terminals and Crash Cushions | ET-2000 (Guardrail Extruder Terminal) (Experimental) | |
| SS-13 | NCHRP 350 | Marion Steel | Sign Supports, Mailboxes, and Delineator Posts | Single to triple 3 ppf and single or dual 4 ppf Rib-Bak post installations with ground splice. ** | |
| B-10 | NCHRP 350 | International Barrier Corp. | Longitudinal Barriers and Bridge Rails | MK-9 Cement-Stabilized Sand Filled Barrier (low profile IBC barrier) | |
| SS-12 | NCHRP 350 | HwyCom Corp. | Sign Supports, Mailboxes, and Delineator Posts | Dual post installations of 3-inch FRP. | |
| B-09 | NCHRP 350 | FHWA memo to Region 9 | Longitudinal Barriers and Bridge Rails | Yuma County Curved Guardrail (Bridge approach treatment) (Experimental) | |
| B-08 | NCHRP 350 | International Barrier Corp. | Longitudinal Barriers and Bridge Rails | Special Assemblies and transitions for the IBC MK-7 sand filled barrier (Operational) | |
| SS-11 | NCHRP 350 | Allied Tube & Conduit | Sign Supports, Mailboxes, and Delineator Posts | Quick-Punch post - Max size 2.25 x 2.25" x 14 ga. in unreinforced 12 ga. sleeve base. | |
| SS-10 | NCHRP 350 | HwyCom Corp. | Sign Supports, Mailboxes, and Delineator Posts | 3-Inch Diameter, 1/8 in. wall, fiber-reinforced plastic post. (see SS-12) | |
| B-07 | NCHRP 350 | The Neel Company | Longitudinal Barriers and Bridge Rails | Concrete Barrier Drainage System (operational) |