Sukup Manufacturing Company is an active interstate carrier based in Sheffield, IA.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 40 | 0 | 0 |
| Tractors | 24 | 1 | 0 |
| Trailers | 89 | 0 | 0 |
| Total Power Units | 65 | ||
Distinct vehicles · 24 mo
vs 65 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 | 46% | 83% | Around peer average |
| 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 | 52% | 86% | 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 | 4 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jul 1, 2025 | 0 | 1 | 1 | 1 |
| Jan 1, 2025 | 0 | 1 | 1 | 1 |
| Oct 1, 2024 | 0 | 0 | 1 | 1 |
| Jul 1, 2024 | 0 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Unsafe Driving | 8 | 2 | 0 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Feb 2, 2026 | IA | TRUCK TRACTOR | 1 | 0 |
| Dec 15, 2025 | IA | TRUCK TRACTOR | 1 | 0 |
| Dec 11, 2025 | SD | TRUCK TRACTOR | 0 | 0 |
| Oct 10, 2025 | NE | TRUCK TRACTOR | 0 | 0 |
| Sep 16, 2025 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 8 | 0.83 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 5 | 3.50 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 9 states. Top state IA accounts for 45% of activity. Activity outside home state (IA): 55%.
+4 other states with fewer inspections
| Vehicle Maintenance | 6 | 2 | 4 |
| IL |
| TRUCK TRACTOR |
| 0 |
| 0 |
| Jul 29, 2025 | IA | TRUCK TRACTOR | 2 | 1 |
| Jul 9, 2025 | MO | TRUCK TRACTOR | 0 | 0 |
| Jun 30, 2025 | SD | TRUCK TRACTOR | 0 | 0 |
| Apr 23, 2025 | IA | TRUCK TRACTOR | 0 | 0 |
| Mar 24, 2025 | IN | TRUCK TRACTOR | 1 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Feb 2, 2026 | 3922SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Unsafe Driving | — |
| Dec 15, 2025 | 3922SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Unsafe Driving | — |
| Jul 29, 2025 | 39311 | No or defective lighting devices or reflective material as required | Vehicle Maintenance | — |
| Jul 29, 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 |
| Mar 24, 2025 | 3922SLLSWZ | State/Local Laws - Speeding work/construction zone | Unsafe Driving | — |
| Feb 14, 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 |
| Feb 4, 2025 | 39617C | Operating a CMV without proof of a periodic inspection | Vehicle Maintenance | — |
| Jan 20, 2025 | 3922SLLS3 | State/Local Laws - Speeding 11-14 miles per hour over the speed limit | Unsafe Driving | — |
| Dec 2, 2024 | 3929A2C | Cargo - Vehicle components or dunnage not secured | Vehicle Maintenance | Yes |
| Oct 29, 2024 | 3922SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Unsafe Driving | — |