• hydraulic dredging, environmental dredging, remedial dredging, brennan

    Safety. Quality. Efficiency
    Every day, every time, in that order.

  • harbor management, barge transportation, inland waterways, marine construction, mississippi river construction, switching and fleeting

    We are a culture of Marine Professionals,

    Individuals who know the risks of working in and around the water.

  • marine construction, dam construction, environmental remediation, railroad construction, commercial diving, brennan

    We self-perform the majority of our work,

    Those are our boots on the ground.

  • commercial diving, underwater construction, underwater inspections, hard hat diving, industrial diving, brennan, adci divers, dive contractors

    Our work takes place above and below the waterline. We are a one-stop, full-service contractor.

  • marine construction, historical photo, j.f.brennan company, brennan, brennan marine, la crosse wi

    Integrity, professionalism, and excellence,

    Our reputation for nearly 100 years.

Dive Services