Corthell Transportation Llc is an active interstate carrier based in Rock Springs, WY.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 14 | 0 | 0 |
| Tractors | 14 | 0 | 0 |
| Trailers | 35 | 0 | 0 |
| Total Power Units | 14 | ||
Distinct vehicles · 24 mo
vs 14 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 94% | 97% | Worse than most peers |
| HOS Compliance | 89% | 95% | Worse than most peers |
| Driver Fitness | 90% | 96% | Worse than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 71% | 90% | Around peer average |
Lower percentile = lower SMS measure = stronger safety record. Computed nightly across active carriers in the same state and fleet-size band.
| Type | Inspections | OOS | OOS % | Nat'l Avg |
|---|---|---|---|---|
| Driver | 0 | 0 | — | 6.67% |
| Vehicle | 0 | 6 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jan 1, 2026 | 0 | 0 | 1 | 1 |
| Apr 1, 2025 | 0 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 25 | 6 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 12, 2026 | IA | TRUCK TRACTOR | 1 | 0 |
| Mar 10, 2026 | IA | TRUCK TRACTOR | 0 | 0 |
| Mar 1, 2026 | WA | TRUCK TRACTOR | 1 | 0 |
| Feb 23, 2026 | WA | TRUCK TRACTOR | 1 | 1 |
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| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 2 | 1.28 | — |
| HOS Compliance | 2 | 0.23 | — |
| Vehicle Maintenance | 9 | 7.39 | — |
| Driver Fitness | 1 | 0.16 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 15 states. Top state TX accounts for 15% of activity. Activity outside home state (WY): 88%.
+10 other states with fewer inspections
| 7 |
| Hours-of-Service Compliance | 2 | 2 | 0 |
| Unsafe Driving | 2 | 1 | 0 |
| Driver Fitness | 1 | 1 | 1 |
| Feb 20, 2026 |
| WY |
| TRUCK TRACTOR |
| 0 |
| 0 |
| Feb 6, 2026 | WY | TRUCK TRACTOR | 0 | 0 |
| Feb 5, 2026 | ND | TRUCK TRACTOR | 0 | 0 |
| Jan 30, 2026 | WY | TRUCK TRACTOR | 0 | 0 |
| Dec 18, 2025 | CO | TRUCK TRACTOR | 0 | 0 |
| Aug 15, 2025 | TX | TRUCK TRACTOR | 1 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 12, 2026 | 3922PK | Unlawfully parking and/or leaving vehicle in the roadway | Unsafe Driving | — |
| Mar 1, 2026 | 39216D | Driver - Failed to use seat belt while operating a CMV | Unsafe Driving | — |
| Feb 23, 2026 | 393100BC | Cargo - Cargo not secured to prevent leaking/spilling/blowing/falling from CMV | Vehicle Maintenance | Yes |
| Aug 15, 2025 | 3963A1 | Inspection repair and maintenance of parts and accessories | Vehicle Maintenance | — |
| Aug 1, 2025 | 39355EB | Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1 1998 | Vehicle Maintenance | — |
| Aug 1, 2025 | 39375A3TAOL | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Vehicle Maintenance | Yes |
| Aug 1, 2025 | 39395A4EEUS | Emergency Equipment - Fire Extinguishers - unsecured | Vehicle Maintenance | — |
| May 27, 2025 | 39345B2BHTD | Air Brake - Hose/tubing damage into the outer reinforcement ply. | Vehicle Maintenance | Yes |
| May 27, 2025 | 3939ALSLI | Lighting - Stop lamps - Any inoperative. | Vehicle Maintenance | — |
| May 27, 2025 | 3965BL | Lubrication - Oil or grease leak | Vehicle Maintenance | — |