 As the highway gets closer to Des Moines , it moves more sharply to the northeast . In southern Waukee , near the entrance ramp to the eastbound rest area , there is an overpass which carries Alice 's Road . A new interchange is planned for this location , which is scheduled to be open in late 2013 or early 2014 . As I @-@ 80 enters West Des Moines , the speed limit lowers to 65 mph ( 105 km / h ) 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 two miles ( 3 km ) 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 . 
