Carrier profile · USDOT 1511177 · Updated Jun 13, 2026

Isbell Construction Inc

21 power unitsavg 4.3 yrLocal · 1 statesHUNTSVILLE, AL88/100
AUTHORITY STATUS UNKNOWN
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 0.0%24-mo cumulative
050%nat'l 22.26%
Driver OOS 5.3%24-mo cumulative
030%nat'l 6.67%

Every inspection in the window pooled — 8 vehicle and 19 driver inspections over 24 months.

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

0.0% · latest 6-mo window● Steady

Share of vehicle-level roadside inspections in each trailing six-month window that resulted in a vehicle out-of-service order. Holding steady 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

19 inspections in the charted months · busiest month Jan '25 · 3

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.

Expected band
Under-inspected
Expected
Well-monitored
Heavily inspected
≈0.5 / unit·yr
thin signalabundant signal
Roadside-inspection volume is about what you'd expect for a 21-unit fleet — enough signal to read the safety record, though not a heavy sample.
Registered power units
21
Inspections · 24 mo
19
Annualized
≈10 / yr
Coverage
≈0.5 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

9%
Unsafe Driving
Vektor peer est.
Hours-of-Service
0violations
clean · per-BASIC
53%
Driver Fitness
Vektor peer est.
Controlled Substances
0violations
clean · per-BASIC
16%
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.

  • 396.17 Periodic (annual) inspectionVehicle Maintenance5 · 0 OOS
  • 392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving4 · 0 OOS
  • 393.9 Inoperative required lampsVehicle Maintenance4 · 1 OOS
  • 393.130 Cargo securement — heavy vehicles/equipmentVehicle Maintenance2 · 2 OOS
  • 383.71 Commercial Driver's License (CDL)Driver Fitness2 · 0 OOS
  • 392.16 Failure to use seat beltUnsafe Driving2 · 0 OOS
  • 393.43 Parts & accessories (vehicle condition)Vehicle Maintenance1 · 1 OOS
  • 393.45 Brake tubing / hose defectsVehicle Maintenance1 · 1 OOS
  • 393.60 Windshield / glazingVehicle Maintenance1 · 0 OOS
  • 393.78 Windshield wipersVehicle Maintenance1 · 0 OOS

ELD & hours-of-service

No hours-of-service or ELD violations on record across 33 inspections — a clean logging history.

Crash history· 15 total · 4 in 24 mo

15
Total crashes
4
In last 24 mo
1
Fatal
4
Injury
YearCrashesFatalInjuryTow
20261001
20253013
20231011
20221011
20212102
20201001
20192012
20181001
20172002
20141001
DateStateFatalitiesInjuriesTow-away
Apr 27, 2026AL00Yes
Oct 6, 2025AL01Yes
Oct 3, 2025AL00Yes
Jul 10, 2025AL00Yes
Aug 23, 2023AL01Yes
Apr 20, 2022AL01Yes
Apr 26, 2021AL00Yes
Feb 19, 2021AL10Yes
Sep 11, 2020AL00Yes
Dec 18, 2019AL01Yes
Jan 21, 2019AL00Yes
Sep 14, 2018AL00Yes
Jun 27, 2017AL00Yes
May 22, 2017AL00Yes
Nov 7, 2014AL00Yes