Velarion Records
Follow this carrier Velarion Records emails you this carrier’s record, cited to the public filing, and tells you when the register changes it. Free.
We’ll email you a link to confirm. The continuous daily watch on every change is the paid alert. Unsubscribe any time.
Also free: The Pay Desk, the weekly executive pay briefing.

Motor carrier · USDOT 4252134

JB MECHANICAL INC, Antioch, CA: USDOT 4252134 safety record, inspections, out-of-service, crashes

Fleet and drivers are as JB MECHANICAL INC filed them on its MCS-150, last updated June 10, 2024. The carrier has been on the FMCSA register since June 10, 2024. Inspections and crashes are the reports in Velarion’s copy of FMCSA’s inspection and crash files, which hold the reports filed by some states, not every state; FMCSA’s free SAFER snapshot carries the carrier’s national 24-month inspection and out-of-service figures.

What the register holds for JB MECHANICAL INC: its USDOT number, its address in Contra Costa County, its operating authority, its fleet of 1 power units and 1 drivers; FMCSA has not rated it. Velarion’s copy of the inspection and crash files holds no inspection and no crash for USDOT 4252134.

Identity

Legal name as filedJB MECHANICAL INC
Doing business asMAS SERVICE
USDOT number4252134
Status on the censusActive
AddressAntioch, CA 94531
CountyContra Costa County
Operating authorityIntrastate Non-Hazmat Carriers
Hazardous materialsCarries hazardous materials
Safety ratingNot rated
Power units1 (1 trucks)
Drivers1 (0 with a CDL)
On the register sinceJune 10, 2024
MCS-150 last filedJune 10, 2024
MCS-150 annual mileage0 miles
Cargo carriedLiquids/Gases; General Freight

Cited to the FMCSA Company Census File.

Roadside inspections

Velarion’s copy of the inspection file holds no inspection for USDOT 4252134.

Cited to the FMCSA Vehicle Inspection File; up to 50 rows shown, newest first.

Crashes

Velarion’s copy of the crash file holds no crash for USDOT 4252134.

Cited to the FMCSA Crash File; up to 50 rows shown, newest first.

Watch this carrier

One carrier, $49/month. One carrier. The watch returns the inspection, violation, enforcement and crash entries the register carries for that carrier alone. Choose “One carrier” and enter this carrier’s USDOT number, 4252134.

Start the watch

How often?
  • One carrier — $49/month
  • One county — $149/month
  • One state — $349/month
  • The whole register — $9,990/year

How we handle your data → Privacy

FMCSA publishes a free snapshot of every carrier on SAFER: its registration, its national inspection and out-of-service figures for the last 24 months, and its crashes; open it for USDOT 4252134.

Nearby on the register

Figures from the FMCSA Company Census File, loaded October 15, 2026, and FMCSA’s inspection and crash files.

How this page was built: FMCSA Company Census File, read October 15, 2026.

What this page shows

JB MECHANICAL INC, a single-power-unit carrier based in Antioch, California, joined the FMCSA register on June 10, 2024, ahead of 84.6% of the 179,736 California carriers with one power unit. Among the 3,794 carriers registered in Contra Costa County with one power unit, it has no crashes and no roadside inspections on file.