The Coastal Infrastructure Improvement Act aims to address the issue of coastal erosion by directing the Secretary of the Army to develop and test new technologies for stabilization and erosion control. The main goal is to find effective solutions that can protect shorelines and coastal areas from erosion while considering environmental impacts. The Act establishes a program that will last for six years, during which the Secretary of the Army, in collaboration with other federal agencies and state programs, will conduct research and development on various erosion control technologies.