The Castle Group Services

The Castle Group offers services and expertise across a wide spectrum of underwater engineering and construction needs, including complete bridge design and installation.

Engineering, Design, & Diagnostic Services

Founded by William J. Castle in 1983, we are a structural/civil engineering company. We provide structural designs, inspection services, testing, and more to both government agencies and private contractors and companies.

»   Read More

Construction & Repair Services

Since 1997 Hydro-Marine has enabled The Castle Group to provide construction and design/build services using our own personnel. This gives us tremendous control over projects, which leads to significant savings and timeliness for our clients.

»   Read More

Customized Prefabricated Bridges

Established in 2001, this company provides customized prefabricated bridge systems. All engineering, from preliminary to final, including actual construction and installation can be provided.

»   Read More