Cofferdam Construction – 80-Foot-High Zoned Earthfill Structure

The contract involves the design and construction of an 80-foot-high zoned earthfill cofferdam, specifically engineered to facilitate dewatering and excavation activities for outlet works. This structure will serve as a temporary barrier to enable safe and efficient dry conditions for critical infrastructure development, requiring precise geotechnical planning and layered earthfill construction to ensure stability, seepage control, and structural integrity under significant hydrostatic loads. The project demands specialized expertise in earthwork engineering, material sourcing, and construction sequencing to meet the rigorous demands of a high-head dewatering environment. The solicitation is issued as a subcontract under NAICS code 237990, indicating it falls under other heavy and civil engineering construction, and is managed by the Department of Defense through the W072 Endist Huntington office. The opportunity was posted on July 16, 2026, with a firm response deadline of July 24, 2026, at 9:00 PM, leaving a narrow window for qualified contractors to submit proposals. The place of performance and specific location details are not provided, suggesting the work will occur at an undisclosed defense-related site, likely tied to water control or hydropower infrastructure. All technical, logistical, and compliance requirements must be addressed in full by proposers to meet federal contracting standards.