Brennan Insights

Island building and habitat restoration have significant environmental benefits, improving aquatic and land-based ecosystems. Working under LS Marine alongside Ramsey County, the U.S. Army Corps of Engineers, Saint Paul District, and the Minnesota Department of Natural Resources, Brennan built up islands at Pigs Eye Lake in Saint Paul, Minnesota. The project’s master plan features seven […]

Originally published by the Western Dredging Association (WEDA). The Western Dredging Association (WEDA) presented its 2023 Environmental Excellence Award for Innovation to the Howards Bay Navigation and Cleanup Dredging Project, which is located within the St. Louis River Area of Concern (SLRAOC) in Superior, Wisconsin, and is an integral part of the Port of Duluth-Superior. […]

We’re proud to share that J.F. Brennan Company received three awards at the 2025 World Dredging Conference & Expo, hosted by the Western Dredging Association (WEDA) in San Diego, California. These honors underscore our longstanding commitment to safety, environmental responsibility, and meaningful partnerships within the dredging and marine construction industry. Brennan was recognized with the Safety Excellence […]

Coordination, Innovation, and Respect for the Environment At the heart of Duluth, Minnesota—near Lake Superior—Brennan led a large-scale environmental remediation project at Munger Landing, removing historical contamination from over 34 acres of the St. Louis River. This multi-year effort addressed legacy pollutants including PCBs, mercury, dioxins, and furans through precision hydraulic dredging, sediment dewatering, water treatment, […]

When a structural failure at the Demopolis Lock and Dam in Alabama brought barge traffic to a halt on the Tennessee-Tombigbee Waterway, the US Army Corps of Engineers (USACE), R&D Maintenance, and J.F. Brennan Company (Brennan) joined forces to deliver a fast, high-stakes solution. The breach—described by Colonel Jeremy Chapman of USACE as “a hole the […]

February 6, 2023 — Specialty marine contractor J.F. Brennan Company, Inc. (Brennan) recently finalized the asset acquisition of the dredging and dewatering division of Infrastructure Alternatives, Inc. (IAI). The purchase brings dewatering, water treatment, and treatability testing services into the organization for the first time.

Nuclear diving demands unwavering safety measures. Every action, from meticulous planning to employing advanced technology, prioritizes the divers’ well-being. While water offers a natural shield against radiation, divers operate in a realm where the invisible poses the greatest threat. Dive deeper with us as we answer questions about the intricacies of nuclear diving, where safety […]

Refinery Wastewater Pond Cleanup with Remote Dredging We recently completed the cleanup of two wastewater ponds for a large producer of transportation fuels. Using a remotely controlled dredge, Brennan removed wastewater sludge from impoundments on the refinery site and dewatered the material with six 2-meter belt filter presses. The remotely controlled dredge added a layer […]

Milestone Achievement in Quality, Environmental, and Safety Standards We are proud to announce that our corporate offices in North Kingstown, RI, and Ottawa, IL, have been officially certified under ISO 9001 (Quality Management), ISO 14001 (Environmental Management), and ISO 45001 (Occupational Health and Safety Management) Systems standards. This certification extension ensures that our customers nationwide […]

BURLINGTON, IOWA (March 11, 2025) – Brennan Marine, Inc. (BMI), a leading provider of harbor management and fleeting services, has expanded its presence on the Upper Mississippi River with the acquisition of Matteson Marine Service, Inc. assets. This strategic acquisition strengthens BMI’s capabilities along a key stretch of the waterway.

Due to their importance, the condition of water-based structures should never be taken for granted, nor should the methods in which they are inspected.  Periodic underwater inspections are crucial to keeping your structure safe and dependable.  Make certain that the dive teams you work with have the experience and know-how to provide you with all […]

Working around water poses a plethora of challenges. There are always two parts of a water-based project, the above and below water sections. Access to the above water section is easy, however when working below the waterline access is not that easy. One of the more apparent issues is what do you do when the […]