Kamananui Valley Road Repair (O’ahu) Koga Engineering & Construction, Inc. successfully completed the Kamananui Valley Road Repairs project located in the heart of Moanalua Valley, home to cultural artifacts and numerous endangered species. The project consisted of grading washed out areas and installing concrete pavement along a two mile stretch of the popular Kamananui Valley Trail. Koga Engineering overcame unique challenges with project access, hikers and budget constraints. Teamwork and innovative ideas allowed the project to be completed without incident and ahead of schedule attesting our commitment to excellence.