Mason Bros Company Inc is an active interstate carrier based in Wadena, MN.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 4 | 0 | 0 |
| Tractors | 43 | 0 | 0 |
| Trailers | 54 | 0 | 0 |
| Buses (16+) | 1 | 0 | 0 |
| Total Power Units | 48 | ||
Distinct vehicles · 24 mo
vs 48 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 | 90% | 95% | Worse than most peers |
| HOS Compliance | 81% | 96% | Worse than most peers |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 72% | 93% | 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 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 19 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Mar 19, 2026 | WI | TRUCK TRACTOR | 0 | 0 |
| Mar 5, 2026 | MN | TRUCK TRACTOR | 2 | 3 |
| Feb 24, 2026 | MN | TRUCK TRACTOR | 0 | 0 |
| Feb 6, 2026 | MN | TRUCK TRACTOR | 2 | 0 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 7 | 2.00 | — |
| HOS Compliance | 1 | 0.13 | — |
| Vehicle Maintenance | 8 | 5.45 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 5 states. Top state MN accounts for 63% of activity. Activity outside home state (MN): 37%.
| 4 |
| Unsafe Driving | 8 | 2 | 0 |
| Hours-of-Service Compliance | 2 | 0 | 0 |
| Nov 12, 2025 |
| WI |
| TRUCK TRACTOR |
| 2 |
| 0 |
| Oct 3, 2025 | MN | TRUCK TRACTOR | 1 | 0 |
| Jul 29, 2025 | IA | TRUCK TRACTOR | 6 | 0 |
| Jul 18, 2025 | SD | TRUCK TRACTOR | 1 | 0 |
| Jul 3, 2025 | MN | TRUCK TRACTOR | 1 | 0 |
| Jun 28, 2025 | MN | TRUCK TRACTOR | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Mar 5, 2026 | 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 | — |
| Mar 5, 2026 | 39345DBAAL | Air Brake - Audible air leak at other than a proper connection | Vehicle Maintenance | Yes |
| Feb 6, 2026 | 39522GELDMFV | HOS (ELD) - A portable ELD is not mounted in a fixed position and visible to the driver when seated in the normal driving position. | Hours-of-Service Compliance | — |
| Feb 6, 2026 | 39522H1ELDNUM | HOS (ELD) - In-Vehicle Information - No user's manual for the driver describing how to operate the ELD. (May be electronic) | Hours-of-Service Compliance | — |
| Nov 12, 2025 | 3922SLLFC | State/Local Laws - Following too closely | Unsafe Driving | — |
| Nov 12, 2025 | 3922SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Unsafe Driving | — |
| Oct 3, 2025 | 3922SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Unsafe Driving | — |
| Jul 29, 2025 | 393203C | Hood not securely fastened | Vehicle Maintenance | — |
| Jul 29, 2025 | 39345B2 | Brake hose or tubing chafing and/or kinking | Vehicle Maintenance | — |
| Jul 29, 2025 | 39347E | Brake Out of Adjustment - Roto Clamp (Short & Long) DD-3 or Bolt | Vehicle Maintenance | — |