PORTZEN CONSTRUCTION INC
AUTHORIZEDUSDOT
459139
MC Number
307464
Fleet Size
75
Total Drivers
120
FMCSA-derived snapshot updated: August 30, 2026. This is not a real-time record; verify critical authority, insurance and safety details directly with FMCSA.
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Safety overview
PORTZEN CONSTRUCTION INC is a mid-size interstate motor carrier based in DUBUQUE, Iowa, operating 75 power units with 120 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 10.0% runs above the national average of 6.7%. The current imported FMCSA crash snapshot returned no matching crash rows for this carrier; this is not proof that no crash occurred. FMCSA records show 10 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 Iowa is 7.4% and the average vehicle OOS rate is 29.9% across 26,539 carriers.
Company details
- Entity Type
- N/A
- Carrier Operation
- Interstate
- Operation Classification
- Authorized For Hire, Private (Property)
- Cargo Carried
- N
- Hazmat
- No
- Safety Rating Date
- N/A
Inspections
10
Total
53%
Driver %
Insurance on file
Liability (BIPD)
UNITED FIRE & CASUALTY CO. — eff. Dec 31, 2025
Cargo
Not on file
Surety Bond
Not on file
Trust Fund
Not on file
Source: Legacy FMCSA. Verify current filings directly with FMCSA before relying on them.
Crash history
0
Total Crashes
Similar carriers in Iowa
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Frequently asked questions
Is PORTZEN CONSTRUCTION INC authorized to operate?
CarrierOwl's FMCSA-derived snapshot for PORTZEN CONSTRUCTION INC (USDOT #459139) shows "AUTHORIZED" status. The snapshot lists them as an interstate carrier. Verify the current official record with FMCSA before booking a load.
What is PORTZEN CONSTRUCTION INC's safety record?
PORTZEN CONSTRUCTION INC has 10 inspections in CarrierOwl's current imported snapshot; the snapshot returned no matching crash rows. They do not show a formal FMCSA safety rating in CarrierOwl's current data. A zero result is limited to the dataset and snapshot window. Verify current BASIC percentiles and crash information directly with FMCSA before relying on them.
How many trucks does PORTZEN CONSTRUCTION INC operate?
PORTZEN CONSTRUCTION INC operates 75 power units with 120 drivers on file. That puts them in the mid-size range.
Does PORTZEN CONSTRUCTION INC transport hazardous materials?
No. PORTZEN CONSTRUCTION INC does not have a hazardous materials flag in the FMCSA database.
Where is PORTZEN CONSTRUCTION INC located?
PORTZEN CONSTRUCTION INC is based in DUBUQUE, Iowa at 205 STONE VALLEY DRIVE, 52003. Phone: (563) 557-7642.
What are PORTZEN CONSTRUCTION INC's out-of-service rates?
PORTZEN CONSTRUCTION INC's driver out-of-service rate is 10.0%, compared with the 6.7% reference shown by FMCSA SMS when checked August 4, 2026. Interpret the difference with inspection volume and verify the current FMCSA record. Their vehicle out-of-service rate is 33.3%, compared with the 23.4% reference shown by FMCSA SMS when checked August 4, 2026. Interpret the difference with inspection volume and verify the current FMCSA record.