Updated Oct 20, 2026

Robertson's Ready Mix Ltd A California Limited Partnership

As of Oct 20, 2026, Robertson's Ready Mix Ltd A California Limited Partnership in Corona, California reports 1,239 power units and 1,239 drivers on its MCS-150, FMCSA safety rating: satisfactory.

200 S Main St #200, Corona, California 92882 (951) 685-4600

Verified Oct 20, 2026 against FMCSA Company Census File (data.transportation.gov)

Robertson's Ready Mix Ltd A California Limited Partnership (USDOT 256299, MC-1040325) is an active motor carrier based in Corona, California that FMCSA's census classifies as for-hire and that declares hazardous materials on its MCS-150. Operation: interstate. Operating authority: active for-hire authority (MC). Fleet: 1,239 power units and 1,239 drivers (1,239 with CDLs). Power units count straight trucks as well as tractors, so they can exceed the tractor count. It reported 30,836,278 miles in 2024. Cargo classes declared: liquids / gases, dry bulk commodities, other cargo (other: Unspecified). It is also classified as a private carrier of its own goods. FMCSA safety rating: satisfactory, from a compliance review on February 1, 1989, 38 years ago; it reflects that review, not current performance. Registration (MCS-150) last updated July 22, 2025.

Key facts

Fleet size	500+ power units source
FMCSA safety rating	Satisfactory source
Rating age	Rating over 10 years old source
Registration update overdue	No source
Operation	Interstate source
Cargo classes (MCS-150)	Liquids / gases, Dry bulk commodities, Other cargo source
Driver count	500+ drivers source
Last MCS-150 update	Jul 22, 2025 source
USDOT number	256299 source
MC docket	MC-1040325 source
Operating authority	Active for-hire authority (MC) source
Other cargo (as described)	Unspecified source
Power units	1,239 source
Tractors (owned or leased)	991 source
Trailers (owned or leased)	14 source
Drivers	1,239 source
CDL drivers	1,239 source
Annual miles (MCS-150)	30,836,278 miles source
Mileage year	2024 source
Also hauls its own freight	Yes source
Safety rating date	Feb 1, 1989 source
USDOT registered since	Mar 8, 1985 source
Business type	Corporation source

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USDOT number: The registration number every interstate (and many intrastate) commercial carrier holds.

MCS-150: The registration form carriers file with FMCSA and must update at least every two years; fleet, drivers, cargo and the hazmat flag on this site come from it, as the carrier declared them.

Safety rating: FMCSA's result after an on-site compliance review: Satisfactory, Conditional or Unsatisfactory. A rating is not refreshed unless FMCSA reviews the carrier again, so many are years old; each profile gives the review date. Most carriers have never been reviewed and are not rated; that is not a bad mark.

Power units: Trucks and tractors that pull or carry freight.

Cargo classes: Self-declared on the MCS-150 from FMCSA's fixed list. Some carriers tick most of the list, so a long list means 'declared', not 'specialises in'; the hazmat flag does not say which hazardous materials.

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Something wrong or out of date? Suggest a correction. Source record ID 256299.