For years, AASHTO listed Veedersburg Indiana as the east endpoint of US 136. (Maybe they still do, or maybe they've just given up trying to maintain a route log.) That was always perplexing to me, because as far as I know, INDoT has always signposted US 136 further east, to Indianapolis. But I was reading through historic AASHTO meeting minutes, and I finally figured out the story behind that. Basically it was due to a botched proposal submitted to AASHTO jointly by Indiana and Illinois (full article here (https://www.usends.com/blog/us-route-wannabes-1975-edition-il-in)).