Adam Rush of the Idaho Transportation Department says officials have replaced the old sign along U.S. Highway 95 with "MILE 419.9," just south of Coeur d'Alene.
Rush added that this is the only 420 sign the department has replaced in Idaho, a state known for its strict anti-marijuana laws despite being nearly surrounded by states with relaxed pot regulations.
Most highways in the country don't cover more than 400 miles. For example, Oregon has been spared the spike in sign thefts due to having no highways long enough to reach past a 400 milepost, even though it recently legalized marijuana./blockquote>
Unfortunately for Idaho, that probably won't affect the usage of marijuana in the state.