Mammoth Constructors LLC
Mammoth Constructors LLC's DOT number is USDOT 1609761.
Needs attention
1 item to check
Based in
Umatilla, FL
Power units
11
Drivers
18
Operation
Interstate
Watch Mammoth Constructors LLC for free
Next MCS-150 due: Jan 31, 2028
We'll email a reminder before it's due, and the same day this carrier's operating status, authority, safety rating or roadside inspections change.
Compliance check
From the FMCSA census and inspection files, checked Oct 21, 2026.
USDOT number status
OKActive in the FMCSA census.
MCS-150 biennial update
OKNext due Jan 31, 2028. Last filed Jan 22, 2026.
Safety rating
InfoNot rated. Most carriers are unrated until a compliance review.
Out-of-service rate (24 months)
CheckVehicle 33.3% vs 22.26% national, driver 0% vs 6.67% national, across 9 inspections.
UCR registration 2027
InfoInterstate carriers must register with UCR every year. 2027 registration is open now. Estimated fee for 11 power units: $333 (bracket 3).
Roadside inspections, last 24 months
| Type | Inspections | Out of service | OOS rate | National avg |
|---|---|---|---|---|
| Vehicle | 6 | 2 | 33.3% | 22.26% |
| Driver | 9 | 0 | 0% | 6.67% |
9 inspections and 26 violations since Oct 21, 2024. Last inspection Sep 21, 2026. National averages are FMCSA-published approximations.
Registration details
- Legal name
- Mammoth Constructors LLC
- DBA
- -
- Classification
- private property
- CDL drivers
- 18
- MCS-150 last filed
- Jan 22, 2026
- Reported mileage
- 187,000 (2023)
- Added to FMCSA
- Feb 21, 2007
- Safety rating
- Not rated
Source: FMCSA Motor Carrier Census and Vehicle Inspection File (data.transportation.gov), public records. Contact details are intentionally not shown. MyDotCheck is an independent service and is not affiliated with, endorsed by, or part of the U.S. Department of Transportation or FMCSA. Data comes from public FMCSA datasets and may lag official records by a day or more. Government filings can be made directly with FMCSA at no charge.