FINAL CONTRACT REPORT EXPERIMENTAL AND ANALYTICAL INVESTIGATIONS OF PILES AND ABUTMENTS OF INTEGRAL BRIDGES SAMI ARSOY, Ph.D. RICHARD M. BARKER, Ph.D., P.E. and J. MICHAEL DUNCAN, Ph.D., P.E. The Charles E. Via, Jr. Department of Civil and Environmental Engineering Virginia Polytechnic Institute and State University Contract Research Sponsored by Virginia Transportation Research Council V·I·R·G·I·N·I·A TRANSPORTATION RESEARCH COUNCIL VIRGINIA TRANSPORTATION RESEARCH COUNCIL