Colorado’s Department of Transportation got tired of having to replace a “Mile 420” sign when allegedly marijuana-fans would continually steal it for their own pleasure, according to an NBC News report on Saturday. In response to the repeated thefts, officials have replaced the “Mile 420” mile-marker sign with one that reads a hundredth-of-a-mile off – “Mile 419.99.”
State officials in Colorado have placed the newer sign along Interstate 70 – near the city of Stratton - in the state that has recently made recreational marijuana legal. This is apparently the only highway in the state that has a 420-mile sign-marker because it is the only highway throughout the state that is long enough to have such a marking.
The number 420 has a long association with the smoking of marijuana. It is the time of day that marijuana smokers – of the past – would light up and smoke their pot. The origin of the term is not clearly defined, but wherever it started, it has lasted through many decades.