Southern Dredging Co Inc.

Southern Dredging Co Inc., a Charleston, South Carolina–based small business dredging contractor, operates as a 100% prime contractor performing maintenance dredging, channel deepening, and sediment removal for the U.S. Army Corps of Engineers under total small business set-asides across all major contract work.

Southern Dredging is a for-profit Subchapter S corporation registered in SAM.gov since November 2001, competing exclusively under small business set-asides. The company's portfolio spans 323 prime awards with a combined potential value of $2.22 billion, of which $441 million has been obligated to date. Nearly all work flows through the U.S. Army Corps of Engineers across multiple districts and component commands, with the Charleston, Jacksonville, Wilmington, and Savannah engineering districts accounting for the vast majority of both award count and dollar value. The vendor holds no subcontract work and maintains no sub-contractor relationships in the source data.

Customer concentration is extreme and stable. The Department of the Army Corps of Engineers and its four named engineering districts (Jacksonville, Charleston, Wilmington, and Savannah) account for 81% of awards by count and 99% of potential value. The Jacksonville District alone anchors $1.97 billion across 21 awards — a single-award Indefinite Delivery Contract worth $400 million that runs through July 2030 and establishes a task-order vehicle for maintenance dredging across the South Atlantic Division. This IDC, awarded June 11, 2025, requires Southern Dredging to perform at least 40 percent of dredged volume using its own equipment or equipment owned by another small business, and anticipates task orders ranging from $1 million to $25 million. The first delivery order under this vehicle, a $20,000 minimum-guarantee award, was issued August 4, 2025.

Concrete recent work includes a $14.5 million definitive contract (September 2025) for FY25 Charleston Upper Harbor and Joint Base Charleston maintenance dredging with completion scheduled November 2026; a $4.65 million exercise of an option under the Brunswick Inner Harbor agreement (September 2025) to address additional shoaling in the South Brunswick River, Georgia, due February 2026; and a $3.595 million FY26 Georgetown Harbor operations and maintenance navigation dredging award (June 2026) due February 2027. Earlier representative awards include a $12 million Charleston Upper Harbor and Joint Base Charleston project (March 2024), an $8.7 million Naval Submarine Base Kings Bay maintenance dredging contract (May 2024), and a $9 million Joint Base Charleston dredging award (July 2022). The vendor's work scope encompasses sediment removal, placement in designated confined disposal areas, bird monitoring, and environmental compliance activities under the Endangered Species Act and Marine Mammals Protection Act, with typical projects involving removal of 500,000 to 1.4 million cubic yards of material per contract.

Southern Dredging's major parent vehicles include a six-task-order Indefinite Delivery Contract (DACW2183C0079) and a five-task-order IDC (DACW6086C0018) under the Charleston District, plus several other district-level single- and multiple-award IDCs that aggregate six orders each. Top NAICS coding is 237990 (Other Heavy and Civil Engineering Construction), with 85 awards in that category; primary PSC work falls under Maintenance of Dredging Facilities (29 awards) and related maintenance, repair, and construction of dredging infrastructure. Activity has remained steady in recent years — four awards in 2022, one in 2023, two in 2024, four in 2025, and one in the first half of 2026 — with only two awards (combined potential value $18.1 million) facing ultimate completion within the next twenty-four months, indicating limited near-term recompete exposure given the five-year runway on the Jacksonville IDC and multiple active district-level task-order vehicles.

MAINTENANCE DREDGING, HYDRAULIC, BEACH RENOURISHMENT