Services
Nearly everything we do takes place around the water, and as a result we have the right people, equipment, and programs necessary to mitigate associated risks.
Environmental Services
We focus on using innovative solutions and new technology to successfully restore contaminated waterways and wetlands, as well as protecting environmentally sensitive areas during a project.
Our environmental services include:
- Environmental Dredging
- Habitat Restoration
- Isolation Barriers
- Sand Covers and Capping
- Environmental Restoration
- Dredged Material Dewatering Services
Marine Construction
Founded along the banks of the Mississippi River, Brennan has been working in and along the inland waterways since 1919. Our abilities include above and below-water construction, repair, and inspection services on a wide variety of structures. With a large fleet of specialty marine equipment, we can operate in bodies of water that range from small ponds to oceans.
Our marine construction services include:
- Acoustic Imaging
- Bridge Construction and Replacement
- Hydrographic Survey
- Side Scan Sonar
- Hydrographic Survey
- Dock and Barge Terminal
- Construction
- Maritime Security Barriers
- Submarine Cable
- Railroad
Dam Construction
At J.F. Brennan Company, our teams have the experience necessary to work in all types of conditions, including confined spaces, elevated workstations, underwater construction, and more. When most firms pursue dam work as a secondary focus, we have made it a primary focus.
Our dam construction services include:
- Intakes and Headworks
- Cofferdams
- Concrete Placement & Repairs
- Gate and Actuators
- Grouting
- Leave-in-Place Formwork
- Hydropower
- Precast Components
Harbor Services
We provide inland harbor services for utility companies, dry bulk terminals, and specialty large bulk shippers along the Mississippi River, providing dependable barge transportation for the safe transport of grain, salt, coal, cement, fertilizer, pig iron, asphalt, and oversized mechanical components.
Our Harbor Management services include:
- Short Haul Towing
- Switching and Fleeting
- Harbor Support
- Vessel Management
Submarine Cable Services
For more than 100 years, we have provided quality above- and below-water construction services on all types of marine-based infrastructure. Our reputation as an innovative contractor who stresses the importance of safety and environmental awareness makes us a preferred partner for many private- and public-sector clients. We’ve taken our century of marine construction experience along with our core principles and incorporated them into the bedrock of our Submarine Cable team.
Our Submarine Cable services include:
- Strategic Staging and Support Locations
- Shore-End Civil and Site Work
- Route Preparation
- Pre-Lay Grapnel Runs
- Submarine Cable Installation
- Post-Lay Cable Protection
- Submarine Cable Inspection
- Cable Repair and Maintenance
- Submarine Cable Removal
- Environmental Preservation
- Permit Support
Dive Services
Our teams are trained to the highest standard, utilizing the newest technologies in underwater services to accomplish difficult tasks in near zero-visibility, through a combination of underwater survey and ROVs. We specialize in inland waterway and wastewater to provide excellent and experienced diving services to fit your needs.
Our dive services services include:
- Dive Inspections
- ROV
- Underwater Construction
- Underwater Inspections & Surveys