Diamond M Lumber CO (USDOT 309428)

Frequently asked questions

What carrier is DOT 309428?

DOT 309428 (USDOT 309428) is Diamond M Lumber CO, an interstate motor carrier.

What is Diamond M Lumber CO's USDOT number?

Diamond M Lumber CO's USDOT number is 309428. No MC docket number is on file.

Is Diamond M Lumber CO currently authorized to operate?

Federal operating authority is not required — private carrier operation. The federal bulk file showed this carrier's USDOT registration active as of Sep 16, 2026. We could not confirm that live just now. Source: FMCSA registration and licensing records.

Does Diamond M Lumber CO have insurance on file with FMCSA?

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

What is Diamond M Lumber CO's safety record?

In the last 24 months, FMCSA records show 1 of 1 vehicle inspection ending out-of-service for Diamond M Lumber CO, too few inspections for a stable rate. FMCSA records also show 0 recordable crashes in the same window.

What is Diamond M Lumber CO's CSA score?

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

What is Diamond M Lumber CO's FMCSA safety rating?

Diamond M Lumber CO 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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Reconstructed from cached and fleetfax-ingested FMCSA public records, so it may be out of date. Records loaded Sep 16, 2026. Verify current status on FMCSA SAFER. fleetfax surfaces the facts; brokers make the judgment. FMCSA status