The first Route 66 associations were founded in Arizona in 1987 and Missouri in 1989 (incorporated in 1990). Other groups in the other US 66 states soon followed. In 1990, the state of Missouri declared US 66 in that state a "State Historic Route". The first "Historic Route 66" marker in Missouri was erected on Kearney Street at Glenstone Avenue in Springfield, Missouri (now replaced—the original sign has been placed at Route 66 State Park near Eureka). Other historic markers now line—at times sporadically—the entire length of road. In many communities, local groups have painted or stenciled the "66" and U.S. Route shield or outline directly onto the road surface, along with the state's name. This is common in areas where conventional signage for "Historic Route 66" is a target of repeated theft by souvenir hunters.