Shape-shifting US routes
^ date reposted to this blog May 11, 2023: originally posted to my old blog May 18, 2023: last updated Inspired by Kurumi in an AARoads Forum post , I decided to compile a list of US routes that have been completely moved (or at least mostly moved) from their original alignments. In other words, these routes bear no resemblance (or very little resemblance) to the route that originally carried the same number. A subset of these shape-shifting routes could be considered "Grandfather's Axe highways". Grandfather's Axe highways That term refers to a philosophical conundrum which posits the question, "If grandfather replaced the head of his axe, and later he replaced the axe handle, is it still the same axe?" One could ask a similar question about some US routes. Imagine a highway that started out along certain corridor, but then the "head" of the route was moved, and later the "tail" of the route was moved, such that the highway no lo...