U.S. Army Corps of Engineers Winfield, Missouri, United States

Major lock and dam restoration under a five-year federal IDIQ contract

Lock and Dam 25 historic lock and dam Civil Construction Work

Historic lock and dam restoration

Originally constructed in 1939, Lock and Dam 25 is listed on the National Register of Historic Places. Alberici is performing major repairs and upgrades to 14 60-foot tainter gates, three 100-foot roller gates, and a service bridge on the 1,296-foot-long dam. The project allows the lock and dam to continue providing the safe transportation of more than 20 million tons of goods each year.

Lock and Dam 25 exterior, Civil Construction Work

Achieving Army Corps standards under a five-year IDIQ contract

Under an indefinite delivery-indefinite quantity (IDIQ) contract to the U.S. Army Corps of Engineers (USACE), Alberici is coordinating multiple mobilizations and demobilizations on the river during a five-year period as federal funds become available. All work is carefully coordinated by Alberici to address the project’s many challenges while effectively achieving USACE’s high standards for safety and quality.

Lock and Dam 25 working on water, Civil Construction Work

Working on water

Structural gate repairs are performed while supported on a floating plant in the river, which is affected by variable water conditions and river traffic. The gates also feature a complex, five-part vinyl-based gate coating system that requires very specific ambient conditions and recoating intervals. Alberici is also replacing crane rails and tainter gate lifting chains, installing electrical controls, and refurbishing operating equipment.

Lock and Dam 25 boat deck, Civil Construction Work

Effective resource utilization

Alberici is self-performing nearly 68 percent of the entire contract, including structural concrete placement, steel erection, equipment repair and installation, floating plant operations, and marine support. Key to project success is Alberici’s 10-acre port facility on the Mississippi River, which provides safe working areas for prefabrication of structural components and pre-assembly of materials prior to final installation.