Working in concert, the American Association of State Highway Officials and the Bureau of Public Roads adopted a uniform highway numbering system and corresponding map on November 11, 1926. The numbering system and map replaced the confusing patchwork of highways and trails, like the Lincoln Highway or the Old Trails Road, with an official network of numbered highways sanctioned by federal and state highway authorities.
Since then, a small group of these highways have attained the status of cultural icon. There’s Route 1, which snakes all the way from Maine to Florida. Route 101…
