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Marine Construction Overview

marine construction, railroad bridge repairs, bridge pier repairsJ.F. Brennan Company specializes in heavy construction on and around the water. We separate ourselves from other construction firms because we perform our services both above and below water. At Brennan, we focus on safety, value, and environmental stewardship during every single project. Aside from our intensive marine safety and environmental training programs, we provide our crews with the proper tools to work on the water. We have a fleet of U.S. Coast Guard approved vessels, several large marine plants, numerous high quality sectional barges, and essential tools to communicate with any navigational traffic.

J.F. Brennan Company has grown to provide our clients with a complete marine construction experience. We often provide innovative solutions to the many challenges facing our critical marine infrastructure. Because we have the capability to work above and below water, we can bring innovative ideas to the table that most firms won’t consider. Our staff of marine professionals and engineers has the experience and tools to tackle any challenging water-based project.

marine construction, dam repairs, dam construction, Mississippi River, Lock and DamsMarine Construction Services

  • Bridge Construction and Repair

    • J.F. Brennan Company specializes in bridge construction, from the deck down. This includes pier and abutment work required for both above and below water applications. From small concrete repair projects to large capital projects, Brennan can facilitate the water-based work required. – Learn More

  • Dam Construction and Repair

    • Inspection, repair, and construction services on dams have been part of J.F Brennan Company’s core business segment of marine construction since its founding. Over the years we have teamed with several government, utility, paper mill, and municipal entities to inspect, repair and build water-based infrastructure. – Learn More

  • Diving, underwater construction, underwater inspection, marine constructionDiving

    • Brennan distinguishes itself from other marine construction firms because we are able to carry out our projects both above and below the waterline. This enables us to bring new ideas and approaches that can lead to large cost savings. Our divers can perform underwater inspections and carry out the repairs of bridges, dams, dock structures, power plants, paper mills, intakes, and discharges. – Learn More

  • Dredging

    • J.F. Brennan can carry out the entire dredge process from sediment removal through dewatering. Our specialty Integrated Dredging and Dewatering Process (ID&D™) focuses on a complete dredge system. – Learn More

  • Marine construction, structural foundation, pile driving, commercial dock structures, sheet pilingTerminal and Harbor Construction

    • J.F. Brennan Company has over 75 years of pile driving experience. We have built several high-quality structures throughout the inland waterways from land and marine-based equipment. Our equipment portfolio includes a wide range of crane sizes, pile driving hammers, and support equipment. From vibratory to large diesel impact hammers we have the capabilities to provide flexible options specific to each and every project. – Learn More

  • Hydrographic Survey

    • Brennan has reinvented the concept of inland waterway hydrographic survey. Using the latest technologies and custom-designed vessels, we have become an innovative leader in underwater mapping and modeling. – Learn More
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