The Iowa DOT has put out a “corridor preservation notice” for two areas along four-lane roads. “Corridor preservation is a tool the Iowa DOT uses to preserve land for future highway needs,” the press releases say. One location is an interchange we know is coming, and one is for an intersection that, for now, will remain so.
The first preservation zone is at the X20 intersection in Springville. Interchange proposals here were already in the public presentation stage nearly a decade ago. I can’t find earlier notices if there were any, so/but doing it now seems really delayed.
The second preservation zone is on US 20 east of the Peosta interchange. The press release does not mention an interchange. However, the newest five-year plan includes “grade and pave” at the Cox Springs Road intersection in the preservation zone. This area had an issue three years ago (KCRG), when construction of a subdivision closed a nearby road, and the city of Peosta wasn’t in complete control of the situation because the developer built the road. There was a non-fatal accident at Cox Springs Road in 2018.