Motor carrier · USDOT 633664

J W MCCLENAHAN COMPANY, San Mateo, CA: USDOT 633664 safety record, inspections, out-of-service, crashes

6Power units
6Drivers
0Roadside inspections on file
0With an out-of-service order
0Crashes on file

Fleet and drivers are as J W MCCLENAHAN COMPANY filed them on its MCS-150, last updated April 1, 2026. The carrier has been on the FMCSA register since March 14, 1996. 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 J W MCCLENAHAN COMPANY: its USDOT number, its address in San Mateo County, its operating authority, its fleet of 6 power units and 6 drivers; FMCSA has not rated it. Velarion’s copy of the inspection and crash files holds no inspection and no crash for USDOT 633664.

Identity

Legal name as filed	J W MCCLENAHAN COMPANY
USDOT number	633664
Status on the census	Active
Address	San Mateo, CA 94403
County	San Mateo County
Operating authority	Interstate Carriers
Hazardous materials	Does not carry hazardous materials
Safety rating	Not rated
Power units	6 (6 trucks)
Drivers	6 (0 with a CDL)
On the register since	March 14, 1996
MCS-150 last filed	April 1, 2026
MCS-150 annual mileage	25,000 miles (2025)
Cargo carried	Building Materials; Construction

Cited to the FMCSA Company Census File.

Roadside inspections

0Inspections
0Any out-of-service order
0Driver out of service
0Vehicle out of service

Velarion’s copy of the inspection file holds no inspection for USDOT 633664.

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

Crashes

0Crashes
0With a fatality
0With an injury

Velarion’s copy of the crash file holds no crash for USDOT 633664.

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

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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 633664.

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.

Of the 13,110 California carriers with 6 to 20 power units, counting this one, 3.5% joined the FMCSA register before J W MCCLENAHAN COMPANY did. San Mateo County has 186 carriers with 6 to 20 power units, and this one lists 6 drivers. Of the 13,110 California carriers with 6 to 20 power units, 60.7% have at least one roadside inspection on file.