So I was digging around today and found that there is a bypass being constructed around the town of Killdeer. According to the second link, this will be completed next fall.
Link 1Link 2While I have no idea what this would be numbered, I wanted to put this on here for future reference, so it's not forgotten.
There is also a bypass in the works for Dickinson, but that's probably not for a long time yet (there's no map I could find).