Iowa Highways: 90 to 99. Iowa 90 (I) Designated: July 1, from that point on, IA 90 ran from I80 west of De Soto to I35 in West Des Moines. For other alignment changes in the Des Moines area, see the Highways of Des Moines page replacing part of US 30 after it was shifted from its old alignment along Mount Vernon Road to its present alignment in Cedar Rapids.
