In the early morning of August 5,2001, artist Richard Ankrom and a group of friends assembled on the 4th Street bridge over the 110 freeway in Los Angeles. They had gathered to commit a crime. Years before, or when Ankrom was driving through downtown Los Angeles,he was going to merge onto the I-5 North. But he missed the exit and got lost. The I-5 exit wasn’t indicated on the green overhead sign. It was clear to Ankrom that the California Department of Transportation had made a mistake. And for some reason, this stuck with him. Ankrom, or an artist and sign painter,decided to produce the Interstate 5 North shield himself. He also decided that he would take it upon himself to install it above the 110 freeway.
He would call it an act of “guerrilla public service.”
Source: thetakeaway.org