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Reshaping America’s Civil, Urban & Marine
Infrastructure Since 1976

NASDI, LLC, established in 1976, is one of the leading demolition and environmental remediation contractors in the United States, self-performing demolition, salvage/recovery and abatement services for many of the nation’s most prominent corporations, institutions and government agencies.

Since 2000, NASDI has become a wholly owned subsidiary of Great Lakes Dredge & Dock Corporation, a Chicago-based, publicly traded, international company operating in two reportable segments – dredging and demolition. NASDI operates across multiple construction segments itself – commercial, industrial and heavy-civil.

NASDI is currently the largest demolition and abatement contractor in the Northeast United States and operates across multiple construction segments - commercial, industrial and heavy civil.