Robert Halligan

Bay Bridge cable lighting The series of lights adorning the westbound spans suspension cables were added in 1986, as part of the bridge's 50th-anniversary celebration. The lighting, which was intended to be temporary, was later made permanent.

Robin Williams Tunnel

Halligan is most remembered for convincing the agency to paint rainbows on the portals of the Waldo Tunnel (now known as the "Robin Williams Tunnel"), on Highway 101 between Mill Valley and the Golden Gate Bridge, since he thought it would be nicer to welcome commuters driving back to the North Bay at the end of the day, when the highway planners were spending a lot of time thinking about the aesthetics and design of the roads in the 1960s and 70s.