Great Southwestern Construction Inc is an active interstate carrier based in Castle Rock, CO.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 187 | 93 | 0 |
| Tractors | 33 | 1 | 0 |
| Trailers | 301 | 12 | 0 |
| Total Power Units | 314 | ||
Distinct vehicles · 24 mo
vs 314 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 63% | 95% | Around peer average |
| HOS Compliance | 88% | 96% | Worse than most peers |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 75% | 91% | 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 | 5 | — | 22.26% |
| Hazmat | 0 | 0 | — |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| Jan 1, 2026 | 0 | 0 | 2 | 2 |
| Apr 1, 2025 | 0 | 2 | 3 | 4 |
| Jul 1, 2024 | 0 | 0 | 1 | 1 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance | 21 | 2 | 6 |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Jan 28, 2026 | TX | STRAIGHT TRUCK | 0 | 0 |
| Jan 21, 2026 | NV | STRAIGHT TRUCK | 0 | 0 |
| Jan 9, 2026 | TX | STRAIGHT TRUCK | 5 | 0 |
| Dec 16, 2025 | TX | STRAIGHT TRUCK | 1 | 0 |
| Dec 16, 2025 |
| Insp w/ Viol |
|---|
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 2 | 0.05 | — |
| HOS Compliance | 1 | 0.02 | — |
| Vehicle Maintenance | 8 | 4.30 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 5 states. Top state TX accounts for 68% of activity. Activity outside home state (CO): 91%.
| Unsafe Driving |
| 2 |
| 2 |
| 0 |
| Hours-of-Service Compliance | 1 | 0 | 0 |
| TX |
| TRUCK TRACTOR |
| 2 |
| 1 |
| Nov 4, 2025 | TX | STRAIGHT TRUCK | 3 | 2 |
| Oct 27, 2025 | TX | STRAIGHT TRUCK | 0 | 0 |
| Aug 25, 2025 | TX | STRAIGHT TRUCK | 2 | 1 |
| Aug 22, 2025 | GA | STRAIGHT TRUCK | 0 | 0 |
| Jul 10, 2025 | TX | STRAIGHT TRUCK | 0 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| Jan 9, 2026 | 3928 | Failing to inspect/use emergency equipment | Vehicle Maintenance | — |
| Jan 9, 2026 | 39378 | Wipers - Inoperative / missing / damaged wipers | Vehicle Maintenance | — |
| Jan 9, 2026 | 39395A | No/discharged/unsecured fire extinguisher | Vehicle Maintenance | — |
| Jan 9, 2026 | 39395F | Emergency Equipment - Stopped vehicle warning devices missing or improper | Vehicle Maintenance | — |
| Jan 9, 2026 | 39617C | Operating a CMV without proof of a periodic inspection | Vehicle Maintenance | — |
| Dec 16, 2025 | 39395A | No/discharged/unsecured fire extinguisher | Vehicle Maintenance | — |
| Dec 16, 2025 | 39222B | Failure to place or improper placement of warning devices on the road surface | Vehicle Maintenance | — |
| Dec 16, 2025 | 39345 | Brake tubing and hose adequacy | Vehicle Maintenance | Yes |
| Nov 4, 2025 | 39343D | No or defective automatic trailer brake | Vehicle Maintenance | Yes |
| Nov 4, 2025 | 3939 | Inoperable Required Lamp | Vehicle Maintenance | — |