Identity & Federal · Carrier profile · USDOT 2958771
MAMMOTH CONSTRUCTION LLC
MANITOWOC, WI 50
Identity & Federal
The official FMCSA identity — legal name, DBA, addresses, contact, officers, and registration — alongside the daily-captured federal-record activity feed, monitored daily by Vektor.
Location
- Physical address
- 1616 WOLLMER ST, MANITOWOC, WI, 54220-3843
- Operation
- Intrastate (Non-Hazmat)
Contact
- Phone
- (920) 482-2656
- Fax
- (920) 717-0048
- Web domain
- mammothbuilds.com
Registration
- Officer
- Pat Matthias
- USDOT / docket
- 2958771
- First registered
- 01/03/2017
- Last MCS-150
- 03/04/2026 · 22,583 mi (2025)
- FMCSA safety rating
- Not rated
- D-U-N-S
- —
Fleet (self-reported · MCS-150)
MCS-150 filing history· biennial-update cadence
Per-filing MCS-150 history (each biennial update + the fleet/mileage it reported) is being captured from the daily federal feed and will appear here as we capture the full history.
Federal record activity· monitored daily by Vektor
No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.