Pot Luck January 13, 2014 Colorado Replaces Mile Marker 420 With 419.99 to Stop Theft Zeke Becker The Colorado Department of Transportation has replaced the 420 mile marker with 419.99 in an effort to stop theft. Categories: Best of the Web, Marijuana News, Pot Luck Tags: colorado.By: Zeke Becker. Permalink: Shortlink: http://weedi.st/yxZtU