A Case Study in the Use of Advanced Technology in th Decision Making Process for Major Bridge Repairs: Lake Hamilton, Arkansas, Bridge Foundation Rehabilitation [mpg] [mpg] David R. Reser, P.E., Infrastructure Engineers, Inc., Saint Cloud, FL Alteration of BNSF Railroad Company Bridge Over the Upper Mississippi River, Burlington, Iowa Dr. Kamal Elnahal, P.E., U.S. Coast Guard, Bridge Administration Office, Washington, DC Black Bridge Over th Blackfoot River - Truss Span Lengthening Brad Miller, P.E., HDR Engineering, Inc., Missoula, MT Dustin Hirose, P.E., HDR Engineering, Inc., Missoula, MT