About a month ago in Missouri Valley the Iowa DOT updated its plans for construction of a future bypass. Story here. Extremely bells-and-whistles, overproduced online meeting here. (Just because it’s an “online meeting” doesn’t mean you can’t give us a PDF. Really.) Please note that the map with the news story is NOT the pairing of the two alternatives, but rather one accepted and one rejected. The orange line remains under consideration, as does a modified version of the purple line (that goes a bit farther south around the city).
Both alternatives stay close to the town and railroad. The main difference between the two options is how soon the bypass rejoins existing US 30 to the northeast. Construction would not begin until the second half of the 2020s.
Either way, the Iowa Welcome Center/Harrison County Historical Village/Lincoln Highway interpretive site will remain on 30, because it’s right at the end of the longer bypass alternative.