Mortenson Bros Transportation Llc is an active interstate carrier based in Plainfield, WI.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 11 | 0 | 0 |
| Tractors | 11 | 0 | 0 |
| Trailers | 13 | 0 | 0 |
| Total Power Units | 11 | ||
Distinct vehicles · 24 mo
vs 11 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category | Insp w/ Viol |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 0% | 0% | Better than most peers |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 85% | 94% | Worse than most peers |
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 |
|---|---|---|---|---|
| Jul 1, 2025 | 0 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 20 | 1 | 6 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Feb 19, 2026 | WI | TRUCK TRACTOR | 8 | 5 |
| Dec 4, 2025 | WI | TRUCK TRACTOR | 4 | 0 |
| Dec 1, 2025 | WI | TRUCK TRACTOR | 0 | 0 |
| Nov 19, 2025 | WI | TRUCK TRACTOR | 1 | 0 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 0 | 0.00 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 6 | 9.23 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 1 state. Top state WI accounts for 100% of activity. Activity outside home state (WI): 0%.
| Apr 21, 2025 |
| WI |
| TRUCK TRACTOR |
| 2 |
| 0 |
| Mar 20, 2025 | WI | TRUCK TRACTOR | 0 | 0 |
| Mar 20, 2025 | WI | TRUCK TRACTOR | 0 | 0 |
| Feb 24, 2025 | WI | TRUCK TRACTOR | 0 | 0 |
| Feb 10, 2025 | WI | TRUCK TRACTOR | 1 | 0 |
| Feb 3, 2025 | WI | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Feb 19, 2026 | 393207BAALPMEOOS | More than 25% of the locking pins are missing or not engaged | Vehicle Maintenance | Yes |
| Feb 19, 2026 | 39345B2BHTD | Air Brake - Hose/tubing damage into the outer reinforcement ply. | Vehicle Maintenance | Yes |
| Feb 19, 2026 | 39345DB | Air Brake - Audible air leak at a proper connection | Vehicle Maintenance | — |
| Feb 19, 2026 | 39345DBAAL | Air Brake - Audible air leak at other than a proper connection | Vehicle Maintenance | Yes |
| Feb 19, 2026 | 39347ABCFSBDSA | Drum Brake - Contaminated friction surface on a steering axle | Vehicle Maintenance | Yes |
| Feb 19, 2026 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |
| Feb 19, 2026 | 39353BB | Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear | Vehicle Maintenance | — |
| Feb 19, 2026 | 3963A1BALR | Air Brake - Fails air loss rate test | Vehicle Maintenance | Yes |
| Dec 4, 2025 | 39355D2B | Air Brake - ABS malfunction lamp defective on truck-tractor manufactured on or after March 1 2001 for towed vehicle. | Vehicle Maintenance | — |
| Dec 4, 2025 | 39355EB | Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1 1998 | Vehicle Maintenance | — |