DENVER – Thieves have been stealing the 420 mile marker sign so often, the state’s transportation department has changed it to “419.99” in an effort to try and stop the problem.

A photo of the 419.99 mile marker sign, which is about 148 miles on Interstate 70 east of Denver, began circulating on twitter through the @JournalistsLike twitter account on Friday.

“So this is our way to test it out. So far it’s working,” said Amy Ford, a spokesperson with the Colorado Department of Transportation. “It’s a traffic safety thing. It’s a helpful thing to have these sings on the road. But people kept ripping them off.”

The number 420 is often used as a reference to smoking marijuana.

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