For , the route heads east, turning to the north again near the southwestern shore of Storm Lake. It continues north past the western shore for  and negotiates an S-curve around the northwestern shore and into the city of Storm Lake.
For , the route moves east first, then changes direction to the north near the southwestern shore of Storm Lake. It continues north past the western shore for  and maneuvers an S-shaped path around the northwestern shore into the city of Storm Lake.