Template for making route markers in the style of the 1961 MUTCD.  Please do not convert the number to a path, as this is not designed for use in Wikipedia articles, but rather to be used as a template for real w:U.S. Routes markers.
Adapted and modified from the 1961 marker on File:US shield evolution.svg
Fredddie, Scott Nazelrod, SPUI, Levente Jakab