SAN FRANCISCO (AP) — A tunnel with rainbow arches that connects the Golden Gate Bridge to greater Marin County has officially become the Robin Williams tunnel.

The San Francisco Chronicle reports (http://bit.ly/1XZUbzl ) that the new Robin Williams Tunnel signs were installed Monday night. The tunnel was unofficially known as the Waldo Tunnel.

State lawmakers approved a resolution last year to change the tunnel's name to honor the late actor and comedian, who grew up and lived in the San Francisco Bay Area.

The two signs — one for each side of the tunnel — cost $3,000. Private donations paid for the cost.