Corner Stone Construction is an active intrastate non-hazmat carrier based in Janesville, WI.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 5 | 0 | 0 |
| Total Power Units | 5 | ||
Distinct vehicles · 24 mo
vs 5 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 | 89% | 95% | 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 | 1 | — | 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 | 13 | 4 | 1 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Jan 30, 2026 | WI | STRAIGHT TRUCK | 2 | 0 |
| Dec 18, 2025 | WI | STRAIGHT TRUCK | 5 | 0 |
| Nov 6, 2025 | WI | STRAIGHT TRUCK | 1 | 0 |
| May 30, 2025 | WI | STRAIGHT TRUCK | 3 | 1 |
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 0 | 0.00 | — |
| HOS Compliance | 0 | 0.00 | — |
| Vehicle Maintenance | 5 | 9.22 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| Dec 23, 2024 | WI | STRAIGHT TRUCK | 2 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Jan 30, 2026 | 3939ALIL | Lighting - Identification lamp(s) inoperative | Vehicle Maintenance | — |
| Jan 30, 2026 | 39617CPI | Operating a CMV without documentation of a periodic inspection | Vehicle Maintenance | — |
| Dec 18, 2025 | 39311A1LIL | Lighting - Identification lamp(s) missing | Vehicle Maintenance | — |
| Dec 18, 2025 | 39375BTFV | Tires - Front less than 4/32 inch tread depth | Vehicle Maintenance | — |
| Dec 18, 2025 | 39395A1 | Emergency Equipment - Fire Extinguishers - no fire extinguisher present or not properly rated. | Vehicle Maintenance | — |
| Dec 18, 2025 | 39395F | Emergency Equipment - Stopped vehicle warning devices missing or improper | Vehicle Maintenance | — |
| Dec 18, 2025 | 39617CPI | Operating a CMV without documentation of a periodic inspection | Vehicle Maintenance | — |
| Nov 6, 2025 | 39395A4EEUS | Emergency Equipment - Fire Extinguishers - unsecured | Vehicle Maintenance | — |
| May 30, 2025 | 3939ALHWS | Lighting - Hazard warning signal(s) inoperative | Vehicle Maintenance | — |
| May 30, 2025 | 3939ALSLI | Lighting - Stop lamps - Any inoperative. | Vehicle Maintenance | — |