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-303A | NCHRP 350 | Eastern Metal/USA-Sign | Work Zone Devices | C-301, C-801, and C-802 Sign Stands | |
| WZ-320 | NCHRP 350 | MDI Traffic Control Products | Work Zone Devices | MDI 5012SSALPT X-Footprint Portable Sign Stand | |
| WZ-316 | NCHRP 350 | MDI Traffic Control Products | Work Zone Devices | MDI 4812KC-60 X-Footprint Portable Sign Stand | |
| WZ-319 | NCHRP 350 | Accuform | Work Zone Devices | FRC786 Tilt Adjust Stand - Spring Version, X-Footprint Portable Sign Stand | |
| CC-100A | NCHRP 350 | Trinity Highway Products | Barrier Terminals and Crash Cushions | Slotted Rail Terminal (SRT-31) used for terminating Trinity Guardrail System (TGS) | |
| B-235 | NCHRP 350 | CalTrans | Longitudinal Barriers and Bridge Rails | Caltrans Low Profile Reinforced Concrete Barrier | |
| SS-131A | NCHRP 350 | Xcessories Squared | Sign Supports, Mailboxes, and Delineator Posts | Keen Break Coupler | |
| WZ-314 | NCHRP 350 | MDI Worldwide | Work Zone Devices | Portable Sign Stands | |
| SS-175 | NCHRP 350 | Xcessories Squared | Sign Supports, Mailboxes, and Delineator Posts | Surface Mount Slip Bases SMSB10-10-G and SMSB8-10-G | |
| SS-134B | NCHRP 350 | Xcessories Squared | Sign Supports, Mailboxes, and Delineator Posts | Xcessories Squared Redi-Torque Triangular Slip Base Xcessories Squared Redi-Torque Triangular Slip Base Top (10 3/8”) with galvanized keeper plate Top (10 3/8”) with galvanized keeper plate |