Marinex Construction Inc.

Marinex Construction Inc. is a for-profit Subchapter S Corporation headquartered in North Charleston, South Carolina, that specializes in large-scale maritime infrastructure and coastal engineering projects. The company has been registered in SAM.gov since February 2007 and maintains active federal contracting capabilities as a prime contractor. Marinex Construction has established itself as a key provider of dredging and coastal storm risk management services to the federal government, with particular expertise in maintaining critical navigation channels and protecting coastal areas along the southeastern United States.

The company's federal contract portfolio demonstrates extensive experience in maintenance dredging operations, beach fill and shore protection projects, and coastal storm risk management initiatives. Between June 2021 and September 2025, Marinex Construction received nine prime federal contract awards from the U.S. Army Corps of Engineers with a combined ceiling value exceeding $176 million. These contracts have been awarded primarily through the Savannah District, Jacksonville District, and Wilmington District of the Corps of Engineers, all without set-aside designations and under full and open competition. The company's work has included the removal of millions of cubic yards of sediment from navigation channels such as the Savannah Inner Harbor (multiple contracts valued between $22.8 million and $33.5 million for maintenance dredging), the Wilmington Harbor Inner Ocean Bar ($13.6 million), Morehead City Harbor ($16.3 million), and beach fill operations in Nassau County, Florida ($19.1 million). Marinex's projects have involved hydraulic cutterhead dredging operations, hopper dredge work, environmental compliance management related to protected species, and the placement of dredged material in upland confined disposal areas. The contracts have supported the Corps of Engineers' Civil Works program mission to maintain navigable waterways and deep-draft navigation channels for commercial maritime commerce while advancing coastal storm risk reduction efforts across multiple southeastern states including Georgia, South Carolina, North Carolina, and Florida.