CONSTITUTIVE AND NUMERICAL MODELING OF SOIL AND SOIL-PILE INTERACTION FOR 3D APPLICATIONS AND KEALAKAHA STREAM BRIDGE CASE STUDY FINAL PROJECT REPORT by Shentang Wang Horst G. Brandes, Professor and Ian N. Robertson, Professor University of Hawaii at Manoa Prepared in cooperation with the: State of Hawaii Department of Transportation Harbors Division and U.S. Department of Transportation Federal Highway Administration Research Report UHM/CEE/11-08 December 2011