Williams Insulation INC (USDOT 611638)

Frequently asked questions

What carrier is DOT 611638?

DOT 611638 (USDOT 611638) is Williams Insulation INC, an interstate motor carrier.

What is Williams Insulation INC's USDOT number?

Williams Insulation INC's USDOT number is 611638. No MC docket number is on file.

Is Williams Insulation INC currently authorized to operate?

Federal operating authority is not required — private carrier operation. Source: FMCSA registration and licensing records.

Does Williams Insulation INC have insurance on file with FMCSA?

No active liability (BIPD) insurance on file with FMCSA.

What is Williams Insulation INC's safety record?

FMCSA records show no vehicle inspections for Williams Insulation INC in the last 24 months, so there is no out-of-service rate. FMCSA records also show 0 recordable crashes in the same window.

What is Williams Insulation INC's CSA score?

FMCSA does not publish a single CSA score for carriers. Williams Insulation INC's public safety data includes its roadside inspection out-of-service rates and crash record, listed on this page.

What is Williams Insulation INC's FMCSA safety rating?

Williams Insulation INC has no published FMCSA safety rating. Most US carriers have never received a rating review, so an unrated carrier is the common case, not a warning sign by itself.

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View the full fleetfax report for Williams Insulation INC

Carriers based in Adrian, MI

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Reconstructed from cached and fleetfax-ingested FMCSA public records, so it may be out of date. Records loaded Sep 14, 2026. Verify current status on FMCSA SAFER. fleetfax surfaces the facts; brokers make the judgment. FMCSA status