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Carrier profile · USDOT 2958771 · Data as of Oct 7, 2026

Mammoth Construction LLC

Manitowoc, WI · Intrastate (Non-Hazmat) for-hire carrier · Since 2017
No MC authorityNot rated by FMCSANo hazmat
Cargo carriedBuilding MaterialsMachinery, Large ObjectsCommodities Dry BulkUtilitiesConstruction
View on FMCSA SAFERCall (920) 482-2656
8
Power units
8
Drivers
1
Inspections · 24 mo
0
Crashes · 24 mo
23K
Annual miles
9 yr
Registered
95
/ 100
Clear to load

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Contact details shared with 3 other USDOTs: Can mean affiliates or a filing service, but also chameleon carriers.

How we scored it · 5 factors
Operating authority20/20
Insurance20/20
Out-of-service rates20/20
Crashes & rating20/20
Continuity & identity15/20

Composite of public FMCSA authority, insurance, inspection and crash records weighted against the national fleet. Decision support, not an official FMCSA safety rating.

Safety

FMCSA inspections & crashes · 24 mo · AS OF OCT 7, 2026
Vehicle out-of-service
—
National 22.26% · 0 of 1 inspections · needs 3+
Driver out-of-service
—
National 6.67% · 0 of 1 inspections · needs 3+
Crashes
0
0 fatal0 injury0 tow-away
Crash rate 0.00 per 1M mi
Total inspections
1
Driver inspections
1
Vehicle inspections
1
People injured
0
Fatalities
0
FMCSA rating
Not rated

Enforcement

FMCSA closed cases

Closed enforcement cases — case numbers, violation codes and the amount settled — are available after you create a free account.

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Authority & insurance

FMCSA L&I · AS OF OCT 7, 2026

No operating authority (MC/FF docket) on file. Private and intrastate carriers don't need one; interstate for-hire carriers and brokers do.

Equipment

SELF-REPORTED ON MCS-150
8
Power units
8
Trucks
—
Tractors owned
6
Trailers owned
8
Drivers
7
CDL drivers
Not registered for hazardous materials.

Operations & cargo

FMCSA CENSUS
Intrastate (Non-Hazmat)Private PropertyAuthorized for Hire
Cargo carried
Building MaterialsMachinery, Large ObjectsCommodities Dry BulkUtilitiesConstruction
Annual mileage
22,583 mi (2025)

Identity & federal record

FMCSA census · MCS-150
USDOT
2958771
MC / docket
None
Legal name
Mammoth Construction LLC
DBA
—
Entity type
Carrier
Operation
Intrastate (Non-Hazmat)
First registered
Jan 3, 2017
Last MCS-150
Mar 4, 2026
Safety rating
Not rated
Drivers (CDL)
8 (7)
Hazmat
No
Business type
—

Fraud & network signals

For review, not a verdict.

No prior revocation
FMCSA shows no link to a previously revoked authority.
Unique phone number
Not shared with any other active USDOT.
Unique email address
Not shared with any other active USDOT.
Shared street address
Same street address as 3 other active USDOTs.
Sharing this street address

Shared contact details can mean affiliated companies or a registration service, but they are also a common sign of chameleon carriers and identity theft. Confirm you're dealing with the company you expect.

Frequently asked

What is Mammoth Construction LLC's USDOT number?

Mammoth Construction LLC's USDOT number is 2958771.

Is Mammoth Construction LLC authorized to operate?

It does not hold MC operating authority, which private and intrastate carriers do not need.

What is Mammoth Construction LLC's safety record?

Over the last 24 months: 1 roadside inspections, and 0 reportable crashes (0 fatal). Not rated by FMCSA.

How big is Mammoth Construction LLC's fleet?

8 power units and 8 drivers per its MCS-150 filed Mar 4, 2026.

Where is Mammoth Construction LLC located?

Mammoth Construction LLC is located at 1616 Wollmer St, Manitowoc, WI, 54220-3843. Phone: (920) 482-2656.

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Source: FMCSA public records via the U.S. DOT Open Data Portal. Carrier Search presents the federal record and computed signals for decision support only. It is not an FMCSA safety rating and not a recommendation to use or avoid any carrier. Verify authority and insurance before tendering.