This was 31 years in the making, but I automated some of the data from the official shapefile, so I was able to finally finish it!
http://bunkerblast.info/roads
While boldly claiming that it's not a primary source might help for Wikipedia (which I think is your intention), primary sources are preferred for almost everything else, like academic research.
Better snag and process those shapefiles regularly. I know of at least one Kentucky state highway, that's been around long since before I was born, that's going away in the next little bit. KY 1398 in Estill County was traded to the county in exchange for a county route (Reges Road) back in the summer, and KY 1398 will be going to county maintenance before long if it hasn't already. Last I heard, the new number for Reges Road had not yet been established.
I plan on processing the shapefiles on each national holiday.
And I thought New Mexico was over the top with State Highway designations all over the place.. :eyebrow:
Looks like the change has already been made on the Estill County map and route log. KY 1398 is no longer. Reges Road is signed as KY 35xx (can't remember the number offhand.) I haven't been down that way in awhile, even with the former KY 1398 being only about 9 miles from where I live, to see if the signs for it have been taken down and signs for the newly-designated route put up yet.