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Truck Graph
0/100
✗ Do Not Tender
No active for-hire authority. Cannot legally haul freight for hire.
Sandstone Engineering INC
DOT 4206774 · Oakley, CA
Report generated: June 11, 2026 at 12:31 PM
✗Authorized for hire?
✗Active insurance?
✓Safety record clean?
✓No fraud flags?
✓No prior revocations?
Carrier Summary

Sandstone Engineering INC (DOT 4206774) is a California-based intrastate carrier headquartered in Oakley, CA. As of June 11, 2026 at 12:31 PM, operating authority is active but without for-hire authority. TruckGraph has detected 1 risk signal on this carrier, including: no active insurance filing on record. TruckGraph rates this carrier "Do Not Tender" based on FMCSA compliance data, inspection history, insurance status, and network connection analysis. Last synced: June 11, 2026 at 12:31 PM.

FMCSA Public Record
Sandstone Engineering INC
DOT Number4206774
MC Number—
Street3140 ANDERSON LN
City / StateOakley, CA 94561-3831
Phone5103347932
Operation typeIntrastate
HazmatNot authorized
Authority age2 yr 3 mo
MCS-150 filed03/08/2024
Company officerMartin Castillo
Power units2
Total drivers9
Authority Status
Common (for-hire)—
Contract (for-hire)—
Broker—
TruckGraph Intelligence
Risk Signals
●No active insurance filing on record
✓ OFAC Sanctions: Clear
Connection Chain
MARTIN CASTILLOShared officer
Active
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Carriers sharing an officer, address, or phone with Sandstone Engineering INC
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Power Units
2
Fleet
Drivers
9
Total
Inspections
0
On record
Crashes
0
On record
OOS Rate
—
↓ Avg 22.26%
Authority Age
2 yr 3 mo
Since 2024
Inspection History
0 total · No inspections

No inspection records on file.

Crash History
0 total on record

No crash records on file.

Insurance Status
⚠ No active insurance filing on record
Verify insurance directly with carrier before tendering any load.
Location
3140 ANDERSON LN, Oakley, CA, 94561-3831 · Open in Maps →
3140 ANDERSON LN, OAKLEY, CA, 94561-3831Open in Maps →
Authority Timeline
Authority GrantedMar 2024
FMCSA issued operating authority
Active USDOT — No for-hire authorityCurrent
USDOT record is active but no for-hire operating authority is currently granted

Source: FMCSA compliance records, inspection data, crash records, insurance filings, and TruckGraph analysis. View methodology

Important Legal Notice

Data sourced from FMCSA public records and TruckGraph independent analysis. This is not legal advice, not a guarantee of carrier safety, and not a compliance certification. Verify through official FMCSA sources before tendering. Last synced: .

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Frequently Asked Questions

Is Sandstone Engineering INC authorized to operate?

Sandstone Engineering INC's USDOT number is active but it does not hold operating authority for for-hire interstate operations. It may operate as a private carrier. Verify status before tendering.

What is Sandstone Engineering INC's safety record?

Sandstone Engineering INC does not have a substantial inspection history on record. This may indicate limited interstate operations.

How many trucks does Sandstone Engineering INC operate?

Sandstone Engineering INC operates 2 power units with approximately 9 drivers.

Is Sandstone Engineering INC insured?

Insurance filing details are not available in the current dataset. Verify directly with the carrier before tendering.

Has Sandstone Engineering INC had any risk indicators?

Sandstone Engineering INC has a risk score of 0/100 (Monitor) with 1 active risk signal. Review the risk section above and verify independently before tendering.

What is the DOT number for Sandstone Engineering INC?

Sandstone Engineering INC's DOT number is 4206774. These identifiers are assigned by the FMCSA and can be used to look up this carrier in official compliance databases.

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Truck Graph data is open and citable. For press inquiries, contact our editorial team.

APA
Truck Graph. (2026). Sandstone Engineering INC Safety Record, DOT 4206774. Retrieved from https://truckgraph.com/carriers/4206774
MLA
"Sandstone Engineering INC Safety Record, DOT 4206774." Truck Graph, Jun 11, 2026, https://truckgraph.com/carriers/4206774
Chicago
"Sandstone Engineering INC Safety Record, DOT 4206774." Truck Graph. Last modified June 11, 2026. https://truckgraph.com/carriers/4206774