USDOT 4429708
Keystone Yards
Keystone Building Inc · Napa, CA · Intrastate
Motor Carrier
✓ Registered fleet operator
4
Power units
3
Drivers
4
Roadside inspections
Fleet & safety
The operation
4
Inspections
Jun 25, 2026
Most recent
Jul 16, 2025
Earliest on file
| Date | State | Level |
|---|---|---|
| Jun 25, 2026 | CA | Level III — Driver-only |
| May 19, 2026 | CA | Level III — Driver-only |
| Nov 17, 2025 | CA | Level II — Walk-around |
| Jul 16, 2025 | CA | Level I — Full |
About
Who we are
Keystone Yards is an intrastate motor carrier based in Napa, CA.
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Contact
Work with Keystone Yards
Address
2040 Hoffman Ln
Napa, CA 94558-9301
Phone
(415) 535-4856
OW•••@K•••.COM
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