Wilson Road over Dunes Creek - Dunes State Park Historic Bridge Rehab in Porter County (Des 2200175) INDOT About INDOT Central Office Welcome to the LaPorte District Current: Wilson Road over Dunes Creek - Dunes State Park Historic Bridge Rehab in Porter County (Des 2200175) This page covers the Dunes State Park Historic Bridge Rehab project in Porter County.Project Documents:PlansEngineer's ReportHBAAEnvironmental DocumentPresentation