US · FMCSA ACTIVE AUTHORITY INSURED
PORTZEN CONSTRUCTION INC
Dubuque, IA 52003 · DOT 459139 · MC307464
Company profile
Web-discovered · as of 2026-07-30
Dubuque, IA-based Portzen Construction Inc (USDOT 459139) is a general contractor and excavation firm providing concrete, paving, and underground utility services. They operate a large private fleet to support their own construction projects across Iowa and Wisconsin.
Fleet use
Specialized service
Operating scope
Regional
Service model
own account
Equipment
dump, specialized
Ownership
Private
Employees
51-200
HQ · 205 Stone Valley Drive, Dubuque, IA 52003, USA
Active company website and 2026 job postings as of July 2026.
Registry record
Source FMCSA · as of 2026-07-08
Fleet size
75
power units · corroborated
Activity
road freight carrier
for hire licence
In operation since
1991
120 drivers
US compliance
Source FMCSA L&I / SAFER · as of 2026-07-08
Operating authority
Active
Insurance on file
Yes (BIPD)
min cover $750k
Out of service
No
Safety rating
UNRATED
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