Today, the easternmost 13 miles of two-lane US 20, in Ida and Sac counties, will close “until late fall 2018,” the Iowa DOT says in a press release. (See also this Cherokee Chronicle Times story.) This is significant not only for its distance and time, but because when the highway opens again, it will be as part of a complete four-lane 20 across Iowa.
The Schaller-Crestland and Galva-Holstein school districts, sharing as Ridge View, will be significantly affected, the Sioux City Journal reports. The Journal also mentions that traffic will not go through Schaller, but on two miles of newly paved road around the northwest part of town.
County Road D15 between Galva and Schaller was US 20 for the first decade of the highway’s life. So, just like how there’s a detour right now using D22 west of Correctionville, the final step in making the new highway involves a callback to the old one.