S B COX READY MIX INC
USDOT 2284804
Active, intrastate (non-hazmat) carrier, mid-size fleet (84 power units) — no FMCSA safety rating on record (common).
Vetting summary
At a glance
- Out-of-service rate21.4% vs 19.1% national avg
- Crashes (24 months)7 reported — involvement does not imply fault
These signals summarize the records shown below — they are a starting point for your own checks, not a judgment of the carrier.
Registration
Carrier identity
| USDOT Number | 2284804 |
|---|---|
| MC Number | — |
| Legal Name | S B COX READY MIX INC |
| DBA Name | — |
| Entity Type | — |
| Phone | 8043640500 |
| Address | 2160 LANIER LANE, Rockville, VA, 23146 |
Status
Authority & safety
| Operating Status | Active |
|---|---|
| Operation Type | Intrastate (Non-Hazmat) |
| Safety Rating | None on record — most carriers have not received a formal FMCSA safety rating. |
| Hazmat Flag | false |
Safety ratings: S = Satisfactory, C = Conditional, U = Unsatisfactory. A carrier with no rating has not been through a full FMCSA compliance review — this is common and not itself a red flag.
Safety events
Inspections & crashes (last 24 months)
| Inspections | 28 |
|---|---|
| Out-of-Service Rate | 21.4% vs 19.1% national average |
| Crashes | 7 total (0 fatal, 3 with injuries, 7 towaway) |
- 2026-06-22 — VA — 1 injured, towaway
- 2026-06-04 — VA — towaway
- 2025-11-04 — VA — 1 injured, towaway
- 2025-10-15 — VA — 1 injured, towaway
- 2024-09-18 — VA — towaway
Most frequent violation categories: 16 (7), 15 (6), 51 (6).
Crash involvement does not imply fault. FMCSA crash records list all reportable crashes involving a carrier, regardless of who caused them.
Equipment
Fleet & operations
| Power Units (trucks) | 84 |
|---|---|
| Drivers | 56 |
| Recent Annual Mileage | 1,143,658 |
| Last MCS-150 Filing | 07-JAN-26 |
S B COX READY MIX INC operates 84 power units — a larger fleet than 100% of carriers registered in VA.
Nearby
Other carriers in Rockville, VA
- J E LIESFELD CONTRACTOR INC — USDOT 2548160, 32 power units
- MOBILE REPAIRS INC — USDOT 2327946, 11 power units
- ALL STATE GEOTHERMAL DRILLING LLC — USDOT 2447974, 2 power units
- DOMINION STRUCTURES LLC — USDOT 2579763, 1 power units
Browse all carriers in Rockville, VA or all VA carriers.