Mihm Brothers Inc is an active interstate carrier based in Fort Atkinson, IA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 32 | 0 | 0 |
| Tractors | 0 | 32 | 0 |
| Trailers | 0 | 32 | 0 |
| Total Power Units | 32 | ||
Distinct vehicles · 24 mo
vs 32 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 | 75% | 86% | Worse than most peers |
| HOS Compliance | 77% | 96% | Worse than most peers |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 33% | 84% | 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 | 1 | — | 6.67% |
| Vehicle | 0 | 2 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jul 1, 2025 | 0 | 0 | 1 | 1 |
| Jan 1, 2025 | 0 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Unsafe Driving | 8 | 5 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 10, 2026 | WI | TRUCK TRACTOR | 0 | 0 |
| Feb 24, 2026 | OH | TRUCK TRACTOR | 0 | 0 |
| Feb 3, 2026 | KS | TRUCK TRACTOR | 0 | 0 |
| Dec 9, 2025 | WI | TRUCK TRACTOR | 1 | 0 |
| Oct 23, 2025 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 8 | 1.83 | — |
| HOS Compliance | 4 | 0.43 | — |
| Vehicle Maintenance | 4 | 1.65 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 13 states. Top state WI accounts for 30% of activity. Activity outside home state (IA): 75%.
+8 other states with fewer inspections
| 0 |
| Hours-of-Service Compliance | 5 | 0 | 2 |
| Vehicle Maintenance | 4 | 1 | 1 |
| KS |
| TRUCK TRACTOR |
| 1 |
| 0 |
| Oct 23, 2025 | IA | TRUCK TRACTOR | 1 | 0 |
| Oct 21, 2025 | WI | TRUCK TRACTOR | 0 | 0 |
| Oct 14, 2025 | WI | TRUCK TRACTOR | 1 | 0 |
| Sep 18, 2025 | IA | TRUCK TRACTOR | 1 | 0 |
| Sep 8, 2025 | NE | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Dec 9, 2025 | 39355EB | Air Brake - ABS malfunction lamp defective on trailers manufactured on or after March 1 1998 | Vehicle Maintenance | — |
| Oct 23, 2025 | 39311A1LHLM | Lighting - Headlamp(s) - Any missing | Vehicle Maintenance | — |
| Oct 23, 2025 | 3922SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Unsafe Driving | — |
| Oct 14, 2025 | 3922SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Unsafe Driving | — |
| Sep 18, 2025 | 39216 | Failing to use seat belt while operating a CMV | Unsafe Driving | — |
| Aug 4, 2025 | 39534A1ELDDFN | HOS (ELD) - Driver failed to note the malfunction of the ELD and provide written notice of the malfunction to the motor carrier within 24 hours | Hours-of-Service Compliance | — |
| Aug 4, 2025 | 3958A | HOS (Form) - Paper Log/Logging Programs Form and Manner | Hours-of-Service Compliance | Yes |
| Apr 3, 2025 | 39375GLOAD | Weight carried exceeds tire load limit | Vehicle Maintenance | Yes |
| Mar 17, 2025 | 39311BCSURR | Conspicuity Systems - Trailers upper rear retro reflective sheeting inadequate on vehicle manufactured on or after December 1 1993 | Vehicle Maintenance | — |
| Jan 29, 2025 | 3922SLLS3 | State/Local Laws - Speeding 11-14 miles per hour over the speed limit | Unsafe Driving | — |