Carrier profile · USDOT 943618 · MC-404792 · Updated Jun 13, 2026
A-1 Transit Corporation
398 power unitsavg 9.1 yrRegional · 7 statesMARATHON, WI81/100
CARRIER ACTIVEMC-404792 ACTIVEHAZMAT
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
- 205 NORTH STREET, MARATHON, WI, 54448
- Mailing address
- 205 NORTH STREET PO BOX 100, MARATHON, WI, 54448
- Operation
- Interstate· Hazmat
Contact
- Phone
- (715) 870-4692
- Fax
- (877) 651-5045
- Web domain
- countymaterials.com
Registration
- Officers
- Bill Sonnentag · Tim Sonnentag
- USDOT / docket
- 943618 · MC-404792
- First registered
- Mar 28, 2001
- Last MCS-150
- May 2, 2025 · 12,055,467 mi (2024)
- 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.