Carrier profile · USDOT 166445 · MC-303495 · Updated Jun 13, 2026

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 MATERIALS

80 power unitsavg 14.3 yrLocal · 1 statesWEST PLAINS, MO69/100
AUTHORITY STATUS UNKNOWNMC-303495 STATUS UNKNOWNRATED SATISFACTORY
Verified linkssmredimix.comFMCSA SAFER

Safety

Roadside out-of-service rates versus the national benchmark, inspection and crash trends, decoded violation themes, and ELD / hours-of-service integrity — the full safety picture behind the verdict.

Out-of-service rate· 24-mo cumulative · vs national

Vehicle OOS 25.0%24-mo cumulative
050%nat'l 22.26%
Driver OOS 0.0%24-mo cumulative
030%nat'l 6.67%

Every inspection in the window pooled — 4 vehicle and 6 driver inspections over 24 months.

Vehicle OOS rate· vehicle OOS · vehicle-level inspections · 6-month trailing

25.0% · latest 6-mo window▼ Falling

Share of vehicle-level roadside inspections in each trailing six-month window that resulted in a vehicle out-of-service order. Trending down 41.7 pts across the window. The national vehicle benchmark uses the same metric and is shown on the chart.

Roadside inspection history· 24 charted calendar months · vehicle / driver level · any-OOS overlay

6 inspections in the charted months · busiest month Sep '24 · 1

Vehicle-levelDriver-levelAny OOS

Monthly FMCSA roadside inspections across the 24 charted calendar months. Bars show level-qualified vehicle and driver populations; one inspection can qualify for both. The line shows inspections with any out-of-service result.

Inspection coverage· expected vs observed · the fraud signal

Inspection coverage

How heavily FMCSA inspects this fleet for its size — it tells you how much to trust the safety signals above. Thin coverage on a young authority is a fraud signal nobody else surfaces.

Thin coverage
Under-inspected
Expected
Well-monitored
Heavily inspected
≈0.0 / unit·yr
thin signalabundant signal
Few roadside inspections for a 80-unit fleet — the out-of-service and violation signals above rest on a small sample, so weight them cautiously. Thin coverage on a young authority is itself a flag.
Registered power units
80
Inspections · 24 mo
6
Annualized
≈3 / yr
Coverage
≈0.0 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

Unsafe Driving
0violations
clean · per-BASIC
Hours-of-Service
0violations
clean · per-BASIC
Driver Fitness
0violations
clean · per-BASIC
Controlled Substances
0violations
clean · per-BASIC
Vehicle Maintenance
9.2measure
SMS · per-BASIC

Percentile = standing among same-exposure peers (higher = worse). FMCSA publishes percentiles for only some carriers (shown official); elsewhere we show a Vektor peer-percentile estimate, or the absolute SMS measure when there are too few inspections to rank.

Violation themes· decoded · grouped by BASIC

What this carrier actually gets cited for — FMCSA violation codes decoded into plain English, ranked by frequency.

  • 393.9 Inoperative required lampsVehicle Maintenance4 · 2 OOS
  • 392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving1 · 0 OOS
  • 393.100 Cargo securement (general)Vehicle Maintenance1 · 1 OOS
  • 393.13 Retroreflective sheetingVehicle Maintenance1 · 0 OOS
  • 393.75 Tires (defective / underinflated / worn)Vehicle Maintenance1 · 1 OOS
  • 393.95 Emergency equipment (extinguisher, triangles)Vehicle Maintenance1 · 0 OOS

ELD & hours-of-service

No hours-of-service or ELD violations on record across 9 inspections — a clean logging history.

Crash history· 22 total · 1 in 24 mo

22
Total crashes
1
In last 24 mo
0
Fatal
11
Injury
YearCrashesFatalInjuryTow
20261001
20241011
20234024
20224004
20212022
20202022
20181011
20172012
20142012
20002012
19961001
DateStateFatalitiesInjuriesTow-away
Apr 28, 2026MO00Yes
Feb 6, 2024MO01Yes
Sep 21, 2023MO01Yes
Sep 7, 2023MO00Yes
Jul 7, 2023MO01Yes
Jun 28, 2023MO00Yes
Sep 8, 2022MO00Yes
Jul 28, 2022MO00Yes
Apr 8, 2022MO00Yes
Mar 23, 2022MO00Yes
Sep 7, 2021AR01Yes
Mar 26, 2021MO01Yes
Jun 4, 2020MO01Yes
Apr 27, 2020AR01Yes
Feb 22, 2018AR01Yes
Sep 14, 2017MO01Yes
Jan 24, 2017MO00Yes
Dec 12, 2014MO02Yes
Mar 21, 2014MO00Yes
Dec 4, 2000MO00Yes
Jun 6, 2000MO03Yes
Jun 19, 1996MO00Yes