Carrier profile · USDOT 3882800 · FF-54521 · Updated Jun 13, 2026

C4 Holdings Inc

DBA USA INSULATION OF WAUKESHA

1 power unitWAUKESHA, WI50/100
AUTHORITY STATUS UNKNOWNFF-54521 STATUS UNKNOWN
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Safety

Roadside out-of-service rates versus the national benchmark, inspection and crash trends, decoded violation themes, and ELD / hours-of-service integrity — the full safety picture behind the verdict.

Out-of-service rate· 24-mo cumulative

No roadside inspections on record.

Roadside inspection history· 24 charted calendar months · vehicle / driver level · any-OOS overlay

No roadside inspections on the FMCSA record in this window