The Mississippi River Stone Placement Master IDIQ Contract, awarded by the U.S. Army Corps of Engineers Memphis District on May 16, 2024, provides indefinite delivery and indefinite quantity services for the construction and maintenance of stone navigation structures along the Mississippi River within the Mississippi and Vicksburg Districts. The contract encompasses the furnishing of all plant, labor, materials, and equipment necessary to construct and maintain various types of river training structures, including dikes, chevrons, bendway weirs, hardpoints, and revetments, as well as related activities such as riprap bank paving, clearing, grading, and excavation. Contractors under this vehicle must be capable of achieving variable daily production rates depending on placement methodology, ranging from approximately 1,000 tons per day for truck-hauled placement to 8,000 tons per day for drag-off placement. This work supports the Mississippi River and Tributaries Channel Improvement Project, under which over 1,100 stone navigation structures totaling 350 miles of construction and approximately 700 miles of revetment have been completed to date.
Task orders issued under this Master IDIQ have included minimum guarantee awards of $30,000 and larger project-specific deliveries such as the Wolf Island Dike Maintenance Task Order valued at $1.136 million with completion deadlines typically extending through 2025 and beyond. Luhr Crosby, LLC and River Mountain Quarries (Pine Bluff Sand And Gravel Company) have been identified as prime contractors holding awards under this vehicle, with Luhr Crosby securing the largest recent task order for dike maintenance work at Arlington, Kentucky. The contract carries a shared ceiling of $150 million and remains active through May 16, 2029, with task orders issued on a firm fixed-price basis and no set-aside designations applied, indicating open competition among qualified contractors. Performance locations have included various locations along the Mississippi River within the designated districts, with work performed under variable river stage conditions requiring specialized equipment and expertise in waterway infrastructure construction and maintenance.