US · FMCSA ACTIVE
J F BRENNAN COMPANY INC
La Crosse, WI 54603 · DOT 160601
Company profile
Web-discovered · as of 2026-07-30
J.F. Brennan Company, Inc. is a La Crosse, WI-based marine construction firm specializing in environmental remediation, dam construction, diving, and harbor management. They maintain a large, nationwide fleet of specialized marine and construction equipment to support infrastructure projects.
Fleet use
Specialized service
Operating scope
National
Equipment
specialized
Ownership
Private
Employees
500-1000
Networks & associations
American Waterway Operators Responsible Carrier Program
Industries served
marine constructionenvironmental remediationdam constructionharbor management
HQ · 818 Bainbridge Street, La Crosse, WI 54603
Active website, 2026 job postings, and FMCSA record as of July 2026.
Registry record
Source FMCSA · as of 2026-08-01
Fleet size
117
power units
Activity
road freight carrier
private licence
In operation since
1974
162 drivers
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