Unofficial site. Not affiliated with FMCSA or USDOT. Data from the public FMCSA Company Census File; always verify on the official FMCSA SAFER.
MC MATERIALS LLC (DBA 1 RIVER ROCK 2 STEWART MORRISON 3 VAUGHN 4 OZARK CO 5 THAYER 6 SALEM 7 ALL THESE ARE REDI MIX 8 SPRING CREEK MATERAILS) is an active interstate motor carrier based in West Plains, MO, reporting 68 power units and 42 drivers on its last MCS-150 filing (2026-10-14).
| USDOT Number | 166445 |
|---|---|
| MC/MX Docket | MC303495 |
| MC Docket Status | Inactive (I) |
| Legal Name | MC MATERIALS LLC |
| DBA Name | 1 RIVER ROCK 2 STEWART MORRISON 3 VAUGHN 4 OZARK CO 5 THAYER 6 SALEM 7 ALL THESE ARE REDI MIX 8 SPRING CREEK MATERAILS |
| Location | West Plains, MO |
| Entity Type | Corporation |
| Operation | Interstate |
| Classification | Private Property |
| Power Units | 68 |
| Trucks | 68 |
| Drivers | 42 |
| CDL Drivers | 42 |
| Hazmat | No |
| Reported Mileage | 860000 (2025) |
| Safety Rating | Satisfactory (2002-03-25) |
| Last MCS-150 Update | 2026-10-14 |
| Added to FMCSA | 1974-06-01 |
| USDOT Status | Active |
MC Docket Status comes from the FMCSA Company Census field docket1_status_code (A = Active, I = Inactive, P = Pending). Empty or missing values show as Not reported. Always confirm on SAFER.
Commodities Dry Bulk, Other, Concrete, Sand, Gravel And Cement
Insurance/authority filing history from the legacy FMCSA L&I system is historical only (records before 2026-05-14). Newer filings made in FMCSA Motus are not included. Verify current insurance on official FMCSA systems.
Verify USDOT 166445 on official FMCSA SAFER →
Street address, phone, email and officer names are intentionally not shown. Is this your company? Request a correction or removal.