Mountain Line Inc
USDOT 3558740 · MC-1194478 · Rock Springs, Wyoming · Interstate for-hire carrier · 50–99 power units
Mountain Line Inc is a company based in Rock Springs, Wyoming, registered with the FMCSA as an interstate carrier (authorized for hire). It reports 90 power units and 80 drivers, which ranks it #9 by fleet size among 24 active for-hire carriers with 50+ power units headquartered in Wyoming. In the 24 months to Sep 24, 2026 its trucks were inspected 167 times – about 1.9 inspections per power unit. 23.5% of vehicle inspections and 4.8% of driver inspections ended with an out-of-service order, against 20.5% and 3.3% for carriers of the same size nationally. FMCSA records 4 reportable crashes in the last 24 months (1 injury, 0 fatalities, 4 tow-away), or 4.4 per 100 power units versus 4.8 for its size band. Crash counts in FMCSA data do not indicate fault. Its registered cargo types are general freight, motor vehicles, meat, refrigerated food, paper products.
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Registration and contact
| Legal name | Mountain Line Inc |
|---|---|
| DBA name | — |
| USDOT number | 3558740 |
| Operating authority (docket) | MC-1194478 |
| Entity type | Authorized for Hire |
| Operation | Interstate |
| Business type | — |
| Physical address | 1948 Edgar St, Rock Springs, WY 82901 |
| Phone | (307) 289-4203 |
| First registered | Jan 27, 2021 |
| Last MCS-150 update | Sep 22, 2026 |
| Hazmat carrier | No |
Check live authority, insurance and out-of-service status: FMCSA SAFER snapshot for USDOT 3558740.
Fleet and drivers
| Equipment | Owned | Term-leased | Trip-leased |
|---|---|---|---|
| Straight trucks | 0 | 0 | 0 |
| Truck tractors | 0 | 90 | 0 |
| Trailers | 0 | 90 | 0 |
- 0.89 drivers per power unit (national median for 50+ unit fleets: 0.99).
- 1.0 trailers per tractor.
- 9,526,534 miles reported for 2026 – about 105,850 miles per power unit vs a 38,151 median for 50–99-unit fleets.
- 0% of listed equipment is owned rather than leased.
- 80 CDL drivers; 80 drivers operate interstate beyond 100 miles, 0 within 100 miles.
Safety record
Roadside inspections Sep 25, 2024 – Sep 24, 2026; crashes Nov 1, 2024 – Oct 31, 2026. Benchmarks: 50–99-unit for-hire carriers nationally (5,500) and Wyoming carriers with 50+ units (24).
| Measure | Mountain Line Inc | Same size, US | WY average | |
|---|---|---|---|---|
| Vehicle out-of-service rate | 23.5% | 20.5% | 24.2% | 15% higher than average |
| Driver out-of-service rate | 4.8% | 3.3% | 8.4% | 44% higher than average |
| Crashes per 100 power units | 4.4 | 4.8 | 2.0 | about average |
| Inspections | 167 | 167 with a driver check, 85 with a vehicle check, 179 BASIC violations recorded | ||
| FMCSA safety rating | Satisfactory (rated Apr 16, 2026) | |||
Cargo carried
Less common in this directory: motor vehicles (873 of 5,000 carriers).
Similar carriers in Wyoming
Closest fleet size and cargo mix among Wyoming carriers in this directory.
| Carrier | City | Power units | Drivers | Inspections (24 mo) | Vehicle OOS | Crashes (24 mo) |
|---|---|---|---|---|---|---|
| GFT Express LLC USDOT 4225562 | Rock Springs | 73 | 73 | 388 | 25.7% | 5 |
| John Bunning Transfer Company Inc USDOT 100378 | Rock Springs | 82 | 36 | 25 | 27.3% | 2 |
| Ryan Bros Trucking Inc USDOT 101191 | Thermopolis | 75 | 44 | 43 | 20.8% | 3 |
| Simon Contractors USDOT 104367 | Cheyenne | 106 | 81 | 22 | 26.7% | 1 |
| Prairie Field Services LLC USDOT 2170456 | Casper | 113 | 117 | 88 | 47.0% | 4 |
| Desert Mountain Corporation USDOT 472709 | Riverton | 73 | 50 | 81 | 23.4% | 0 |
Other carriers near Rock Springs
| Carrier | City | Power units | Drivers | Inspections (24 mo) | Vehicle OOS | Crashes (24 mo) |
|---|---|---|---|---|---|---|
| Redi Services LLC USDOT 1415274 | Lyman | 285 | 375 | 38 | 21.7% | 3 |
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FAQ
What is the USDOT number of Mountain Line Inc?
Mountain Line Inc is registered with USDOT number 3558740 and operating authority MC-1194478.
How many trucks does Mountain Line Inc have?
It reports 90 power units (90 tractors, 0 straight trucks) and 90 trailers, with 80 drivers, on its last MCS-150 update (Sep 22, 2026).
Where is Mountain Line Inc located?
Its registered physical address is in Rock Springs, Wyoming 82901.
What is the out-of-service rate of Mountain Line Inc?
Over 24 months, 23.5% of vehicle inspections and 4.8% of driver inspections resulted in an out-of-service order (same-size national average: 20.5% vehicle, 3.3% driver).
Source: FMCSA Company Census File, SMS inspection file and Crash File (data.transportation.gov), refreshed 2026-11-04. Figures are as reported to FMCSA and may lag. How we calculate these numbers. Spotted an error? Carriers update their record with FMCSA via the MCS-150 form; see corrections.