Route 66 History Page
"US 66 (Route 66) was officially removed from the United States Highway System on June 27, 1985 after it was decided the route was no longer relevant and had been replaced by the Interstate Highway System. Portions of the road that passed through Illinois, Missouri, New Mexico, and Arizona have been designated a National Scenic Byway of the name “Historic Route 66”. It has begun to return to maps in this form. Some portions of the road in southern California have been redesignated “State Route 66” and others bear “Historic Route 66” signs and relevant historic information."