MANSON CONSTRUCTION CO

Manson Construction Co. specializes in heavy civil engineering projects with a focused expertise in dredging, coastal infrastructure, and marine construction for federal defense and public works clients. Their core capabilities include maintenance and capital dredging of harbor channels, coastal storm risk management, shoreline restoration via beach berm construction, and the replacement of marine pile systems including wood-to-steel conversions and sacrificial anode installation. The contractor demonstrates deep technical proficiency in hydrographic survey coordination, sediment transport logistics, and adherence to stringent environmental and navigational standards under U.S. Army Corps of Engineers and Department of Defense specifications. Their work often involves complex offshore operations requiring precise depth control, material disposal planning, and compliance with MLLW-based engineering tolerances, positioning them as a trusted performer in high-stakes maritime infrastructure maintenance. The company maintains a consistent relationship with the Department of Defense, delivering critical harbor and coastal infrastructure services across multiple U.S. coasts, including the Gulf, Atlantic, and Pacific regions. Projects span from major navigation channel dredging to localized shoreline protection, indicating a pattern of recurring, mission-critical support for military port and waterfront readiness. While other agencies such as the Department of the Interior and Department of Agriculture have engaged the firm, the overwhelming majority of work is defense-driven, suggesting a strong alignment with DoD’s infrastructure resilience priorities. Manson Construction operates primarily under NAICS 237990, which encompasses other heavy and civil engineering construction—specifically marine, dredging, and coastal engineering projects that require specialized heavy equipment, vessel-based operations, and subsurface construction techniques. Their market positioning centers on niche, labor- and equipment-intensive civil works that demand regulatory compliance and operational precision in sensitive aquatic environments. As a 2L entity based in Seattle, Washington, Manson Construction Co. is a mid-sized contractor with no federal certifications on record. Their geographic footprint is defined by federal project locations rather than regional office presence, with operations concentrated along strategic U.S. waterways supporting national defense and coastal resilience missions.