Manson Construction Co. was founded in 1905 as a small pile-driving business supporting the early development of Seattle’s waterfront. Today, Manson’s legacy of quality marine services continues to grow at locations throughout North America.  Over the last century, Manson's has expanded to six business offices and five marine yards located in strategic regions. With more than 800 employees and a large fleet of equipment, Manson supports high-profile marine infrastructure and energy projects across the nation.