Colorado's mile marker 420 sign is no more after sticky-fingered stoners kept stealing it.

State officials have switched out the sign on a remote stretch of Interstate 70 in eastern Colorado with a post reading Mile 419.99 as a way to keep thieves at bay, the Denver Post reported.

The number 420 is often used as a reference for marijuana -- which is now legal in the state.

"Obviously people steal these signs," Colorado Department of Transportation spokeswoman Amy Ford told the Post. "In the past, if a sign was stolen too much, we wouldn't replace it. This is sort of an innovative way for us to keep the sign there."

Officials have also had problems with thieves stealing the 69 mile marker sign in the past, Denver TV station KUSA reported.