lanes are separated by a Jersey barrier. They begin their journey together by heading north; they briefly run through West Des Moines and then cross into Clive at University Avenue. At the Clive–Urbandale city limits is the interchange with Hickman Road, which carries US 6. Hickman Road serves a truck stop to the west and the Living History Farms visitor center to the east. The two Interstates continue north through Urbandale where they pass Douglas Avenue. The Iowa 141 exit is at Rider Corner, the point where the I-35/I-80 freeway curves 90 degrees to the east. East of the 86th Street exit, the freeway begins a slow descent toward the Des Moines River. Merle Hay Road, named for the first Iowan to die in World War I, carries Iowa 28 from the south to its northern end at the Interstates. They cross the Des Moines River just south of the mouth of Beaver Creek. to the east is Iowa 415 and further east is US 69. Between the interchanges there is a fourth lane in each direction. At the end of their together, I-35 exits to the north and I-235's eastern end is to the south at the East Mixmaster. East of I-35, I-80 meets up with US 65 on the outskirts of Altoona. The two routes only share the highway for as US 65 splits away at the next exit. Here, US 6 rejoins I-80 for the second time and the Interstate returns to its four-lane configuration. After a third exit for Altoona, the Interstate resumes its rural limit. Near Colfax, the highways cross the South Skunk River. After an interchange with Iowa 117, the highway is forced to the north to avoid crossing the river multiple times. As it returns south to its original line, it meets CR F48, which was another former alignment of US 6. At the Iowa 14 exit in Newton, US 6 exits off the Interstate. East of Newton is an interchange that serves the Iowa Speedway. east of the speedway is an exit for Iowa 224 which connects to Kellogg. After this interchange, the highway curves to the northeast and descends a hill to cross the North Skunk River. Shortly after the river, it curves back to the east and climbs up the hill. As the road straightens out, it begins a stretch of straight highway. Between the river and the Iowa 146