The US 30 exit at County Road R70 opened Oct. 14, according to a press release from the DOT. The overpass bridge was built right next to the intersection, so there’s going to be a slight bend in R70 from here on out. This exit is just east of the I-35/US 30 interchange.
Strangely, the BGSs include the rural street name, 580th Avenue, and not the town reached by R70, Cambridge. This was the exact wrong approach.
This exit is part of the plan to convert 30 between Ames and Nevada into a full freeway. Just to the west, construction to add an extra lane between I-35 and Dayton Avenue will start next year.