W A Ellis Construction CO.

W A Ellis Construction CO., doing business as Missouri Rock, is a for-profit construction firm headquartered in Independence, Missouri, specializing in riverbank stabilization, navigation infrastructure repair, and civil works projects. The company is registered in SAM.gov and primarily provides construction services to the U.S. Army Corps of Engineers, focusing on maintaining and improving river infrastructure along the Missouri River. With a strong emphasis on small business participation, Missouri Rock has established itself as a key contractor in river management and infrastructure maintenance, leveraging its expertise in handling complex civil engineering projects involving stone placement, navigation obstruction removal, and riverbank stabilization.

The company has been awarded multiple prime federal contracts for river-related construction services, predominantly with the U.S. Army Corps of Engineers. These contracts include stone placement along the Missouri River, removal of navigation obstructions, and repairs to river structures between various river miles. The contract awards range from $2,500 to $51,781,245, with most contracts set aside for small businesses. Specific projects have involved dismantling navigation obstructions, delivering rock materials, performing riverbank stabilization, and repairing stone river structures. The contracts consistently demonstrate Missouri Rock's capabilities in civil engineering, particularly in maintaining navigable river channels and supporting critical infrastructure along the Missouri River.

W A Ellis Construction CO. holds three significant Indefinite Delivery Contracts (IDVs) with the U.S. Army Corps of Engineers. These include a $49 million multiple-award IDC for the Missouri River Bank Stabilization and Navigation Project (BSNP) set to complete in July 2028, a $99.5 million small business IDC for construction services between river miles 0-500 with a completion date of September 2026, and a $7 million Blanket Purchase Agreement for rock materials valid through November 2025. These IDVs enable flexible task order issuance for river infrastructure maintenance, with the contracts covering a wide range of services including stone placement, rock transportation, structure repair, and support for the Missouri River Recovery Program. The IDVs are primarily awarded by the U.S. Army Corps of Engineers, with task orders issued under the Missouri River Bank Stabilization and Navigation Program Services Multiple Award Task Order Contract (MATOC).