California Tunnel Renamed After Robin Williams

A sign stands at the northbound entrance to the recently renamed Robin Williams Tunnel in Sausalito, Calif., on March 1, 2016. Alan Dep/Marin Independent Journal via 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 that the new Robin Williams Tunnel signs were installed Monday night. The tunnel was unofficially known as the Waldo Tunnel.

Private donations paid for the cost.