Carrier profile · USDOT 791398 · Updated Jun 21, 2026

THORNTON CONSTRUCTION INC

20 power unitsavg 17.2 yrLocal · 1 statesMILFORD, ME87/100
AUTHORITY STATUS UNKNOWNHAZMAT
Verified linksFMCSA 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 — 8 vehicle and 11 driver inspections over 24 months.

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

33.3% · 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 2.9 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

9 inspections in the charted months · busiest month May '26 · 2

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
≈0.3 / unit·yr
thin signalabundant signal
Few roadside inspections for a 20-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
20
Inspections · 24 mo
11
Annualized
≈6 / yr
Coverage
≈0.3 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

4%
Unsafe Driving
Vektor peer est.
Hours-of-Service
0violations
clean · per-BASIC
Driver Fitness
0violations
clean · per-BASIC
Controlled Substances
0violations
clean · per-BASIC
66%
Vehicle Maintenance
Vektor peer est.

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.

  • 393.75 Tires (defective / underinflated / worn)Vehicle Maintenance5 · 4 OOS
  • 393.9 Inoperative required lampsVehicle Maintenance4 · 0 OOS
  • 392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving3 · 0 OOS
  • 396.17 Periodic (annual) inspectionVehicle Maintenance2 · 0 OOS
  • 393.45 Brake tubing / hose defectsVehicle Maintenance2 · 0 OOS
  • 393.55 Antilock brake system (ABS)Vehicle Maintenance2 · 0 OOS
  • 393.86 Rear impact guard / bumperVehicle Maintenance2 · 0 OOS
  • 392.16 Failure to use seat beltUnsafe Driving2 · 0 OOS
  • 393.83 Exhaust systemVehicle Maintenance1 · 0 OOS
  • 393.201 Parts & accessories (vehicle condition)Vehicle Maintenance1 · 0 OOS

ELD & hours-of-service

No hours-of-service or ELD violations on record across 23 inspections — a clean logging history.

Crash history· 13 total · 1 in 24 mo

13
Total crashes
1
In last 24 mo
0
Fatal
6
Injury
YearCrashesFatalInjuryTow
20251001
20221001
20201001
20181011
20171001
20151001
20142021
20131011
20112022
20101001
20031001
DateStateFatalitiesInjuriesTow-away
Feb 4, 2025ME00Yes
Feb 23, 2022ME00Yes
Jun 24, 2020ME00Yes
May 14, 2018ME01Yes
Jan 25, 2017ME00Yes
Feb 25, 2015ME00Yes
Sep 17, 2014ME01No
Aug 19, 2014ME02Yes
Jan 16, 2013ME01Yes
Sep 14, 2011ME02Yes
Jul 29, 2011ME01Yes
Apr 15, 2010ME00Yes
May 28, 2003ME00Yes