Summary: The Pittsburgh District of the US Army Corps of Engineers is working to find a modern, standardized design for three guard walls at the Montgomery, Dashields, and Emsworth locks and dams in order to reduce Operations and Maintenance costs. Guard walls serve as a guide for river barge pilots to align their ships with the lock, which can be up to 1200 feet long. In addition to serving as a guide, guard walls also protect the dam from runaway barge impacts. Thus, Cadets considered real-world engineer issues such as spatial constraints, cost, material properties, strength, serviceability, sustainability, and fabrication. In doing so, Cadets provided conceptual sketches, conducted numerical modeling flow analyses using Adaptive Hydraulics Modeling, utilized the USACE barge impact tools, created a physical model, and conducted physical model testing to verify numerical analyses, and delivered a detailed cost estimation in conjunction with experts from USACE.