U.S. Federal Route 69 is a north-south highway in Central Polk County. This runs through the heart of Metro-Des Monies. U.S. Rt. 69 passes through the following towns in Polk County. Ankeny Carney Des Monies U.S. Rt. 69 is not multi-plexed in Polk County. U.S. Rt. 69 intersects the following highways in Polk County. Iowa State Route 160, at Ankeny. Interstate 35, near Des Monies. Interstate 80, near Des Monies. U.S. Rt. 6, at Des Monies. Iowa State Route 163, at Des Monies. Interstate 235, at Des Monies.