SIERRA INSULATION CO INC
AUTHORIZEDUSDOT
1396146
MC Number
N/A
Fleet Size
14
Total Drivers
12
Last updated: March 16, 2026
Broker verification report
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Safety overview
SIERRA INSULATION CO INC is a small interstate motor carrier based in AUBURN, California, operating 14 power units with 12 drivers. CarrierOwl is currently validating BASIC percentile display against the official FMCSA SMS portal; use the inspection, out-of-service, crash, authority, and insurance data below as the primary public safety indicators on this page. Their driver out-of-service rate of 0.0% comes in under the 5.51% national average. No crashes on file. FMCSA records show 4 inspections for this carrier.
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BASIC scores
Under reviewCarrierOwl is validating BASIC percentile calculations against the official FMCSA SMS portal. Until that review is complete, use FMCSA directly for current BASIC percentiles and use the inspection, out-of-service, crash, authority, and insurance data on this page as supporting indicators.
BASIC percentile display is temporarily paused while we validate CarrierOwl's methodology against the official FMCSA SMS portal.
Out-of-service rates vs. national average
An out-of-service order means the driver or vehicle was pulled from operation during a roadside inspection.
For reference, the average driver OOS rate in California is 8.9% and the average vehicle OOS rate is 22.4% across 312,857 carriers.
Company details
- Entity Type
- N/A
- Carrier Operation
- Interstate
- Operation Classification
- Private (Property)
- Cargo Carried
- N
- Hazmat
- No
- Safety Rating Date
- N/A
Inspections
4
Total
57%
Driver %
Insurance on file
No insurance records on file with FMCSA.
Crash history
0
Total Crashes
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Frequently asked questions
Is SIERRA INSULATION CO INC authorized to operate?
Yes. SIERRA INSULATION CO INC (USDOT #1396146) currently holds "AUTHORIZED" status with FMCSA. They're registered as an interstate carrier.
What is SIERRA INSULATION CO INC's safety record?
SIERRA INSULATION CO INC has 4 inspections on file and no crashes on record. They do not show a formal FMCSA safety rating in CarrierOwl's current data. CarrierOwl is validating BASIC percentile display against the official FMCSA SMS portal, so brokers should verify current BASIC percentiles directly with FMCSA before relying on them.
How many trucks does SIERRA INSULATION CO INC operate?
SIERRA INSULATION CO INC operates 14 power units with 12 drivers on file. That makes them a small carrier.
Does SIERRA INSULATION CO INC transport hazardous materials?
No. SIERRA INSULATION CO INC does not have a hazardous materials flag in the FMCSA database.
Where is SIERRA INSULATION CO INC located?
SIERRA INSULATION CO INC is based in AUBURN, California at 2025 AIRPARK CT STE 50, 95602. Phone: (530) 889-2186.
What are SIERRA INSULATION CO INC's out-of-service rates?
SIERRA INSULATION CO INC's driver out-of-service rate is 0.0%, compared to the national average of 5.51%. Below average, which is a good sign. Their vehicle out-of-service rate is 0.0% (national average: 20.72%). Below average, suggesting the fleet is well-maintained.