Signs bearing the number "420" have been frequently stolen. In Colorado, the Colorado Department of Transportation replaced the Mile Marker 420 sign on I-70 east of Denver with one reading in an attempt to stop the thievery.  The Idaho Department of Transportation (ITD) replaced the Mile Marker 420 sign on . Highway 95, just south of Coeur d'Alene, with Mile Marker .  That marker was eventually stolen as well, leading ITD to just post the marker with spray paint on the pavement. [ citation needed ] In Goodhue County, Minnesota, officials have changed "420 St" street signs to "42x St".