Maynard Monsen & Son Inc is an active intrastate non-hazmat carrier based in Menomonee Falls, WI.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 12 | 0 | 0 |
| Tractors | 4 | 0 | 0 |
| Trailers | 7 | 0 | 0 |
| Total Power Units | 16 | ||
Distinct vehicles · 24 mo
vs 16 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 71% | 92% | Around peer average |
| HOS Compliance | 0% | 0% | Better than most peers |
| Driver Fitness | 98% | 99% | Worse than most peers |
| Controlled Substances | 99% | 100% | Worse than most peers |
| Vehicle Maintenance | 82% | 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 | 4 | — | 6.67% |
| Vehicle | 0 | 2 | — | 22.26% |
| Hazmat | 0 | 0 | — | 4.44% |
Where they run
Inspected in 1 state. Top state WI accounts for of activity.
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| No crashes recorded | 0 | 0 | 0 | 0 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 6 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Nov 17, 2025 | WI | STRAIGHT TRUCK | 3 | 2 |
| Sep 2, 2025 | WI | STRAIGHT TRUCK | 0 | 0 |
| Apr 17, 2025 | WI | TRUCK TRACTOR | 4 | 2 |
| Oct 18, 2024 | WI | STRAIGHT TRUCK | 5 |
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| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 2 | 0.88 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 2 | 8.50 | — |
| Driver Fitness | 2 | 5.44 | — |
| Controlled Substances | 1 | 1.11 | — |
| 2 |
| 2 |
| Driver Fitness | 3 | 2 | 3 |
| Unsafe Driving | 2 | 1 | 0 |
| Controlled Substances/​Alcohol | 1 | 1 | 1 |
| Sep 6, 2024 | WI | STRAIGHT TRUCK | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Nov 17, 2025 | 38323A2LCDLN | License (CDL) - Operate a CMV and does not possess a valid CDL | Driver Fitness | Yes |
| Nov 17, 2025 | 39141APC | Medical (Certificate) - Operating a property-carrying vehicle without a valid medical certificate in possession or on file with the state drivers licensing agency | Driver Fitness | Yes |
| Nov 17, 2025 | 3922SLLTCD | State/Local Laws - Failed to obey a traffic control device - Permanent or Temporary - e.g. safety official signal sign light lane marking other | Unsafe Driving | — |
| Apr 17, 2025 | 393207ASTCB | Suspension - Suspension connecting rod or tracking component assembly (including spring leaves used as a suspension connecting rod) or any part used for attaching | Vehicle Maintenance | Yes |
| Apr 17, 2025 | 39395A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | Vehicle Maintenance | — |
| Apr 17, 2025 | 3939ALTSI | Lighting - Turn signal - Any inoperative on the rearmost vehicle. | Vehicle Maintenance | Yes |
| Apr 17, 2025 | 39617CPI | Operating a CMV without documentation of a periodic inspection | Vehicle Maintenance | — |
| Oct 18, 2024 | 38323A2LCDLN | License (CDL) - Operate a CMV and does not possess a valid CDL | Driver Fitness | Yes |
| Oct 18, 2024 | 3903EDAC | Driver prohibited from performing safety sensitive functions per 382.501(a) in the Drug and Alcohol Clearinghouse | Controlled Substances/​Alcohol | Yes |
| Oct 18, 2024 | 39216D | Driver - Failed to use seat belt while operating a CMV | Unsafe Driving | — |