As the highway gets closer to Des Moines, it moves more sharply to the northeast. In southern Waukee, there is an interchange with Grand Prairie Parkway, the first diverging diamond interchange in the state. As I-80 enters West Des Moines, the speed limit lowers to and the path of the Interstate straightens out to the east at the Jordan Creek Parkway exit. The highway adds a third lane eastbound and drops the third lane westbound. Almost to the east is the interchange with I-35, which also marks the beginning of I-235. Eastbound I-80 exits the freeway via a flyover ramp to northbound I-35; eastbound I-235 begins as the continuation of the I-80 freeway. Locally, this exit is called the West Mixmaster.