 This is Radio Iowa. Parts of Interstate 29 and I-680 north of Council Bluffs reopened last night, though flooding continues to force partial lane closures and lane sharing. On this Fourth of July, Iowans may have to travel a little farther to use the state park, as several are closed or partly closed by flooding, including Backbone, Brushy Creek, Dolliver, George Wythe, Gull Point, Ledges, Mines of Spain, Rock Creek and Wilson Island.