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 |
|---|---|---|---|---|---|
| WZ-220 | NCHRP 350 | Yodock | Work Zone Devices | Slimline Channelizer Model 2001SL | |
| B-142 | NCHRP 350 | Composite Structural Design, LLC | Longitudinal Barriers and Bridge Rails | Steel roadside barrier @ TL-5 (Max-Rail) | |
| SS-130 | NCHRP 350 | Northwest Pipe Company | Sign Supports, Mailboxes, and Delineator Posts | PSST Slip Base | |
| LS-59 | NCHRP 350 | Component Products | Luminaire Supports | Cast Aluminum Pedestal Bases | |
| WZ-221 | NCHRP 350 | Mathy Construction Co. | Work Zone Devices | Mathy Construction Co. | |
| WZ-219 | NCHRP 350 | Missouri DOT | Work Zone Devices | Ground Mounted Temp. Sign stand | |
| WZ-39#1 | NCHRP 350 | Davidson Plastics Corp. | Work Zone Devices | Type III Barricade | |
| WZ-212 | NCHRP 350 | Flex Safe, Inc. | Work Zone Devices | Flex-Safe Barricade | |
| WZ-193 (Amend #1) | NCHRP 350 | Davidson Traffic Control Products | Work Zone Devices | FG300 Curb System | |
| SS-131 | NCHRP 350 | Xcessories Squared | Sign Supports, Mailboxes, and Delineator Posts | PSST Coupling |