CarrierintelCarrierintel
MC

MAMMOTH CONSTRUCTION LLC

DOT 2958771ActiveIntrastate Non-HazmatMANITOWOC, WI

COMPANY

Authority since
—
MCS-150
2026-03-04 · 22,583 mi (2025)
Fleet
8 units · 6 trailers · 8 drivers
Annual mileage (VMT)
22,583 mi (2025)
Owner origin
Western-northern-european
Origin candidates
German 84%

ADDRESS

Physical
1616 WOLLMER ST
MANITOWOC, WI 54220-3843
Mailing
Same as physical

CONTACT

Phone
9204822656
Email
pat@mammothbuilds.com

OFFICERS

Primary Officer
PAT MATTHIAS
Title
OWNER
Origin
Western-northern-european

OPERATION & CARGO

Operation classification
Private Property · Authorized For Hire
Specialty
Construction & Building Materials
Cargo types
5
Building MaterialsMachinery, Large ObjectsCommodities Dry BulkUtilityConstruction
Self-reported by the company on its latest MCS-150 filing (FMCSA census). Reflects what the carrier is authorized and equipped to haul, not actual recent loads. Specialty is our summary of the declared cargo mix.
AUTHORITY
—
Active authority
INSURANCE
None
No coverage on file
RISK GRADE
Moderate Risk
1 risk factors · 1 strengths
OOS RATE
0.0%
0 / 2 inspections

Fleet vs Reality

last 12 months · power-unit VINs from roadside inspections
Checking local VIN index…

Moderate Risk

1 risk factor · 1 strengths · 3 data points

SAFETY PERFORMANCE

Crash Record
0 crashes · 0 fatal · 0 with injuries · 0 tow-away
Clean Inspection Rate
100% — 2 clean of 2 inspections
Out-of-Service Rate
0.0% — driver OOS 0, vehicle OOS 0

COMPLIANCE & AUTHORITY

Operating Authority
Active operating authority on file
Authority Events
No authority history events
MCS-150 Filing
Last filed 2026-03-04

INSURANCE

Active Coverage
No insurance policies on file

SUMMARY

No active insurance on file
No crashes in the last 24 months

Related carriers

All carriers in MANITOWOCAll carriers in WisconsinBrowse carriers by state