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-114 | Ssquare Tube Products | Sign Supports, Mailboxes, and Delineator Posts | NEX Tube Mailbox Support | ||
| SS-116 | NCHRP 350 | Valley Forge & Bolt Manufacturing Co. | Sign Supports, Mailboxes, and Delineator Posts | Use of load indicating fasteners in slip bases | |
| WZ-118 | NCHRP 350 | Three D Traffic Works | Work Zone Devices | TD6000 VIP Vertical Panels and TD7000 Ring Top Stackable Cone | |
| SS-115 | NCHRP 350 | MaxiStrut | Sign Supports, Mailboxes, and Delineator Posts | T-Top or U-Top to pipe sign support when placed on a standard triangular slip base | |
| B-109 | NCHRP 350 | Interstate Timber Products Co. | Longitudinal Barriers and Bridge Rails | Plastic block for strong-post w-beam | |
| CC-36C | Impact Absorption, Inc. | Barrier Terminals and Crash Cushions | Supplemental test (3-52) @ TL-3 | ||
| B-108 | NCHRP 350 | Barrier Systems, Inc. | Longitudinal Barriers and Bridge Rails | Temporary steel barrier @ TL-2/TL-3 | |
| CC-61A | NCHRP 350 | Midwest Roadside Safety Facility | Barrier Terminals and Crash Cushions | Conditional acceptance for bolted-steel posts for SKT-350 | |
| SS-108 | NCHRP 350 | Glenncast, Inc. | Sign Supports, Mailboxes, and Delineator Posts | Aluminum Sign Poles with Decorative Castings | |
| SS-113 | NCHRP 350 | Intellistrobe Safety System | Sign Supports, Mailboxes, and Delineator Posts | Intellistobe signal system |