J.F. Brennan Company, Inc. (Brennan) provides marine construction, environmental remediation, and harbor management services on the inland waterways of the United States. Loyal to the company’s founding principles of hard work and innovation, Brennan is currently celebrating 100 years in business. With over 50 ADCI-certified commercial divers and a large fleet of marine equipment, Brennan provides both above- and below-water services. A value-driven contractor, delivering cost-effective solutions to owners of water-based infrastructure, Brennan serves as a valued resource for the inland waterways and those operating on them.