Unimark Lowboy Transportation LLC
USDOT 1604546 · MC-593409 · Pleasant Prairie, Wisconsin · Interstate for-hire carrier · 100–249 power units
Unimark Lowboy Transportation LLC is a company based in Pleasant Prairie, Wisconsin, registered with the FMCSA as an interstate carrier (authorized for hire). It reports 154 power units and 163 drivers, which ranks it #65 by fleet size among 267 active for-hire carriers with 50+ power units headquartered in Wisconsin. In the 24 months to Sep 24, 2026 its trucks were inspected 110 times – about 0.7 inspections per power unit. 25.5% of vehicle inspections and 1.8% of driver inspections ended with an out-of-service order, against 18.8% and 2.6% for carriers of the same size nationally. FMCSA records 13 reportable crashes in the last 24 months (10 injuries, 3 fatalities, 13 tow-away), or 8.4 per 100 power units versus 4.5 for its size band. Crash counts in FMCSA data do not indicate fault. Its registered cargo types are motor vehicles, drive-away / towaway.
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Registration and contact
| Legal name | Unimark Lowboy Transportation LLC |
|---|---|
| DBA name | — |
| USDOT number | 1604546 |
| Operating authority (docket) | MC-593409 |
| Entity type | Authorized for Hire |
| Operation | Interstate |
| Business type | — |
| Physical address | 10801 Corporate Drive, Pleasant Prairie, WI 53158 |
| Phone | (262) 564-7282 |
| First registered | Feb 6, 2007 |
| Last MCS-150 update | Jun 24, 2026 |
| Hazmat carrier | No |
Check live authority, insurance and out-of-service status: FMCSA SAFER snapshot for USDOT 1604546.
Fleet and drivers
| Equipment | Owned | Term-leased | Trip-leased |
|---|---|---|---|
| Straight trucks | 0 | 0 | 0 |
| Truck tractors | 5 | 72 | 0 |
| Trailers | 118 | 37 | 0 |
- 1.06 drivers per power unit (national median for 50+ unit fleets: 0.99).
- 2.0 trailers per tractor – a drop-and-hook style trailer pool.
- 9,113,256 miles reported for 2025 – about 59,177 miles per power unit vs a 41,613 median for 100–249-unit fleets.
- 53% of listed equipment is owned rather than leased.
- 163 CDL drivers; 163 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: 100–249-unit for-hire carriers nationally (2,611) and Wisconsin carriers with 50+ units (267).
| Measure | Unimark Lowboy Transportatio | Same size, US | WI average | |
|---|---|---|---|---|
| Vehicle out-of-service rate | 25.5% | 18.8% | 17.1% | 36% higher than average |
| Driver out-of-service rate | 1.8% | 2.6% | 1.1% | 30% lower than average |
| Crashes per 100 power units | 8.4 | 4.5 | 4.8 | 88% higher than average |
| Inspections | 110 | 110 with a driver check, 47 with a vehicle check, 62 BASIC violations recorded, 1 hazmat-related | ||
| FMCSA safety rating | Not rated – most carriers have never had a compliance review; this is not a negative finding. | |||
Cargo carried
Less common in this directory: drive-away / towaway (383 of 5,000 carriers); motor vehicles (873 of 5,000 carriers).
Similar carriers in Wisconsin
Closest fleet size and cargo mix among Wisconsin carriers in this directory.
| Carrier | City | Power units | Drivers | Inspections (24 mo) | Vehicle OOS | Crashes (24 mo) |
|---|---|---|---|---|---|---|
| Auto Truck Transport USA LLC USDOT 317106 | Pleasant Priaire | 420 | 210 | 255 | 17.9% | 19 |
| Mega Star Inc USDOT 3329989 | Racine | 80 | 86 | 33 | 57.9% | 1 |
| KLM 20 LLC USDOT 4459130 | Kenosha | 98 | 99 | 171 | 32.5% | 2 |
| Bilato LLC USDOT 3953842 | Mequon | 130 | 136 | 458 | 28.3% | 25 |
| J K Hackl Transportation Services Inc USDOT 438391 | Sun Prairie | 150 | 75 | 124 | 23.3% | 7 |
| Emv Transportation LLC USDOT 3284972 | Rhinelander | 90 | 103 | 49 | 30.0% | 0 |
Other carriers near Pleasant Prairie
| Carrier | City | Power units | Drivers | Inspections (24 mo) | Vehicle OOS | Crashes (24 mo) |
|---|---|---|---|---|---|---|
| Acg Freight Inc USDOT 3077395 | Pleasant Prairie | 71 | 71 | 192 | 23.5% | 8 |
| Roadrunner Transportation Services Inc USDOT 242009 | South Milwaukee | 720 | 734 | 1,059 | 15.9% | 49 |
| Avala Express LLC USDOT 2427589 | Franksville | 556 | 265 | 543 | 31.9% | 31 |
| Active USA LLC USDOT 12358 | Pleasant Priaire | 351 | 335 | 263 | 3.4% | 11 |
| Payne & Dolan Inc USDOT 152572 | Waukesha | 181 | 356 | 27 | 11.1% | 4 |
| Kutzler Ymx MC LLC USDOT 223464 | Kenosha | 133 | 179 | 45 | 44.0% | 3 |
| Road Runners America Logistics LLC USDOT 3715802 | Elm Grove | 105 | 105 | 168 | 19.7% | 5 |
| Aim Transfer & Storage Inc USDOT 1184578 | Oak Creek | 96 | 94 | 54 | 39.4% | 2 |
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FAQ
What is the USDOT number of Unimark Lowboy Transportation LLC?
Unimark Lowboy Transportation LLC is registered with USDOT number 1604546 and operating authority MC-593409.
How many trucks does Unimark Lowboy Transportation LLC have?
It reports 154 power units (77 tractors, 0 straight trucks) and 155 trailers, with 163 drivers, on its last MCS-150 update (Jun 24, 2026).
Where is Unimark Lowboy Transportation LLC located?
Its registered physical address is in Pleasant Prairie, Wisconsin 53158.
What is the out-of-service rate of Unimark Lowboy Transportation LLC?
Over 24 months, 25.5% of vehicle inspections and 1.8% of driver inspections resulted in an out-of-service order (same-size national average: 18.8% vehicle, 2.6% 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.