SR 46 Truss Bridge Improvement Project over Whitewater River, Dearborn County INDOT About INDOT Central Office Welcome to the Seymour District SR 46 Truss Bridge Improvement Project over Whitewater River, Dearborn County This page covers the SR 46 Truss Bridge Improvement Project over Whitewater River in Dearborn County.Project DocumentsFinal Environmental Document DES#1383721SR 46 Truss Bridge Improvement Project over Whitewater River Hearing PresentationLegal Notice DES# 1383721Hearing Plans for DES#1383721