Great Lakes Dredge & Dock Co, LLC
Great Lakes Dredge & Dock Co, LLC is a leading provider of dredging and marine construction services to federal, state, and commercial clients in the United States. As a subsidiary of Great Lakes Dredge & Dock Corporation, the company specializes in capital, maintenance, and coastal protection dredging projects, primarily for the U.S. Army Corps of Engineers. Their core services include deepening and maintaining navigation channels, beach nourishment, land reclamation, environmental restoration, and contaminated sediment remediation. Great Lakes Dredge & Dock Co, LLC operates an extensive fleet of specialized marine equipment, including hopper dredges, cutter suction dredges, drill boats, and support vessels, enabling them to undertake a wide range of complex marine construction projects across the country.
The majority of Great Lakes Dredge & Dock Co, LLC's federal contract awards come from the U.S. Army Corps of Engineers for dredging and coastal protection projects across various districts. These projects include maintenance dredging of harbors, channels, and waterways; beach nourishment and coastal storm risk management; and environmental restoration. Specific examples of their work include dredging the Freeport Harbor Channel in Texas, maintenance of the Kings Bay Entrance Channel in Georgia and Florida, beach renourishment in New Jersey, and maintenance dredging in the Mississippi River. The company has also performed work for the Naval Submarine Base Kings Bay and various other ports and harbors along the East Coast, Gulf Coast, and Great Lakes. Most contracts awarded to Great Lakes Dredge & Dock Co, LLC are without set-aside designations, reflecting their position as a large, specialized contractor in the dredging industry. In addition to their prime contract work, they have also served as a subcontractor on projects such as dredging material from the Missouri River for AECOM Technical Services, Inc.
Great Lakes Dredge & Dock Co, LLC holds several significant indefinite delivery/indefinite quantity (IDIQ) contracts with the U.S. Army Corps of Engineers. These include a $98 million single-award contract for hopper dredging services in Freeport Harbor, Texas; a $49.5 million multiple-award contract for cutterhead pipeline dredging in the Vicksburg District; and a $59.1 million single-award contract for dredging along the McClellan-Kerr Arkansas River Navigation System. The company also holds a $29.5 million single-award contract for dredging services to maintain navigable waterways, primarily in harbors along the Mississippi River. Additionally, Great Lakes Dredge & Dock Co, LLC is part of multiple-award IDIQ contracts, including the Galveston District Rapid Response Pipeline Dredging contract with a ceiling of $45 million. These IDIQ contracts demonstrate the company's broad capabilities in providing dredging services across various regions and project types for the U.S. Army Corps of Engineers, supporting the agency's mission to maintain navigable waterways and coastal protection structures throughout the United States.
M9LFLA6K8HE4 237990
Not listed 9811 Katy Fwy Suite 1200, Houston, TX 77024, USA
11/9/07 6/7/25 Cashman Dredging & Marine Contracting Co LLC
Cashman Dredging & Marine Contracting Co LLC is a corporate entity classified as a for-profit limited liability company that has been registered to receive federal contract awards since 2006. The company provides dredging and marine contracting services to the U.S. government, primarily maintenance dredging of navigation channels, harbors, rivers, and piers for the U.S. Army Corps of Engineers and U.S. Navy.
Cashman has received numerous prime federal contracts and delivery orders from the Army Corps of Engineers and Navy to perform maintenance dredging projects at locations along the Atlantic, Gulf, and Pacific coasts. The company conducts dredging of sediments like silt, sand, and rock to specified depths using clamshell, hydraulic, and hopper dredges. Dredged materials are transported to designated disposal sites inland or offshore. Recent awards have tasked Cashman with dredging the Baltimore Harbor and Channels, Portsmouth Harbor, Jacksonville Harbor, Palm Beach Harbor, Tampa Harbor, Wellfleet Harbor, Kennebec River, Rio Puerto Nuevo Channel, and naval piers at installations like Yorktown. The company holds IDV positions across multiple agencies, including indefinite-delivery/indefinite-quantity contract vehicles allowing the issuance of task orders over several years. Most contracts from the Corps and Navy have not utilized set-aside designations given the highly specialized nature of dredging services.
Cashman holds a prime position on the U.S. Army Corps of Engineers Engineering District Jacksonville's multiple award Indefinite Delivery/Indefinite Quantity (IDIQ) contract for dredging and shore protection services called SAD Dredging and Shore Protection 2019. This contract vehicle provides dredging and coastal protection support to various Corps districts within the agency's South Atlantic Division. The master IDIQ initially had a $450 million ceiling value when awarded in 2019 with a period of performance extending to April 2024. Under this contract, Cashman has received multiple task orders for maintenance dredging of harbors and channels at locations like Palm Beach, Miami, and Tampa in Florida. The Jacksonville District has issued firm fixed price delivery orders in excess of $10 million against this IDIQ contract to Cashman for services like harbor dredging to maintain authorized depths and navigability.
TYY2AX9QLGX8 237990
Not listed 549 South St, Quincy, MA 02169, USA
1/18/06 12/17/25 Cottrell Contracting Corporation
Cottrell Contracting Corporation is a self-certified small disadvantaged business headquartered in Chesapeake, Virginia, specializing in dredging, coastal engineering, shore protection, and environmental services primarily for the U.S. Army Corps of Engineers. As a subchapter S corporation structured as a for-profit organization, the company has been registered in SAM.gov since September 2001 and provides critical infrastructure and maritime maintenance services to federal agencies. The company focuses on maintaining navigable waterways, performing beach nourishment projects, and supporting coastal resilience through precision dredging and sediment management operations.
Cottrell Contracting Corporation has consistently secured federal contract awards across multiple U.S. Army Corps of Engineers districts, including Norfolk, Philadelphia, Savannah, Jacksonville, and Wilmington. Their primary services involve maintenance dredging of rivers, harbors, intracoastal waterways, and naval facilities, with projects ranging from removing sediment from navigation channels to beach renourishment and coastal storm damage reduction. Many of their contracts are set aside for small businesses, demonstrating their commitment to supporting small business participation in federal contracting. They have performed dredging services in diverse locations including the Delaware River, James River, Atlantic Intracoastal Waterway, Naval Submarine Base Kings Bay, and various coastal regions in states like Virginia, North Carolina, Georgia, and Florida.
The company holds a significant $30 million single-award indefinite delivery contract (IDV) with the U.S. Army Corps of Engineers Norfolk District for maintenance dredging along the James River Federal Navigation Project. This IDV, awarded in September 2022, allows Cottrell to perform hydraulic cutter suction and mechanical dredging to remove sediment from navigation channels, turning basins, and berthing areas. The contract enables them to dredge up to 2 million cubic yards annually and supports the Corps' mission of maintaining navigable waterways. Under this IDV, Cottrell has already received multiple firm fixed-price delivery orders, including awards for dredging the lower and middle James River ranging from $3.8 million to $9.1 million, demonstrating their ongoing role in supporting critical maritime infrastructure maintenance.
KDJRHWYG4ML1 237990
Not listed 328 N Battlefield Blvd, Chesapeake, VA 23320, USA
9/14/01 3/21/25 Norfolk Dredging Company
Norfolk Dredging Company is a for-profit organization registered in the System for Award Management (SAM) since 2002, specializing in dredging and marine construction services primarily for federal government agencies. The company has established itself as a key contractor for maritime infrastructure maintenance and coastal engineering projects, with a strong focus on serving the U.S. Army Corps of Engineers and the Department of the Navy. Based on its contract award history, Norfolk Dredging Company demonstrates extensive expertise in navigational channel maintenance, beach nourishment, and marine construction across the East Coast and Gulf Coast regions.
The company has consistently been awarded substantial federal contracts for maintenance dredging of critical waterways, harbors, and naval installations. Its primary contract work includes removing accumulated sediment from navigation channels, harbors, and coastal areas, with projects ranging from the Delaware River to Naval Station Norfolk, and from New York Harbor to Canaveral Harbor in Florida. Norfolk Dredging Company has performed dredging services involving volumes ranging from 40,000 to 3,500,000 cubic yards per project, utilizing techniques such as mechanical clamshell dredging, hydraulic cutter-head dredging, and precise material placement in designated disposal sites. The majority of its contracts are awarded by defense-related agencies, specifically the U.S. Army Corps of Engineers and Navy Installations Command, and are typically definitive, firm-fixed-price contracts without small business set-aside designations. The company appears to be a preferred contractor for large-scale maritime infrastructure maintenance and coastal protection projects, often participating in regional Indefinite Delivery/Indefinite Quantity (IDIQ) contract vehicles.
HTVQLC41UCS9 237990
Not listed 110 Centerville Turnpike N, Chesapeake, VA 23320, USA
4/13/02 3/4/25 Marinex Construction Inc.
Marinex Construction Inc. is a for-profit Subchapter S Corporation that specializes in providing dredging and coastal storm risk management services to the U.S. federal government, primarily the U.S. Army Corps of Engineers. Established as a federal contractor since at least 2007, the company has become a key player in maintaining navigable waterways and mitigating coastal erosion along the U.S. East Coast and Southeast. Marinex Construction's core competencies lie in performing maintenance dredging of harbors, channels, and inlets, as well as executing beach nourishment and shore protection projects. The company's expertise in heavy civil engineering construction, particularly in marine environments, has made it a preferred contractor for federal agencies tasked with preserving vital maritime infrastructure and coastal areas.
Over the past several years, Marinex Construction has been awarded numerous firm fixed price definitive contracts and delivery orders from various U.S. Army Corps of Engineers districts, including Savannah, Charleston, Wilmington, and Jacksonville. These projects typically involve removing large volumes of sediment and shoaled material from navigation channels, harbors, and turning basins, with contract values ranging from $13 million to $43 million. The company utilizes hydraulic cutterhead dredges and other specialized equipment to maintain channel depths crucial for commercial shipping. Dredged materials are often placed on nearby beaches for nourishment or in confined upland disposal areas. Marinex is also a multiple award contractor under the "SAD Dredging and Shore Protection 2019" indefinite delivery/indefinite quantity (IDIQ) contract, which has an overall ceiling value of $450 million. Through this vehicle, the company has performed additional dredging and coastal storm damage reduction work, such as the $17.4 million project at Anna Maria Island, Florida. These contracts are typically awarded through full and open competition without set-aside designations, reflecting Marinex Construction's competitive position in the industry. The company has also served as a subcontractor on major dredging initiatives, such as the Charleston Upper Harbor project, further demonstrating its capabilities and partnerships within the sector.
NLNZS42SH3D6 237990
Not listed 1903 Pittsburgh Ave, North Charleston, SC 29405, USA
2/15/07 2/27/25