In an attempt to tie this back to GCA, I'll ask about great bridges in golf. Bel Air's suspension bridge between the 10th tee & green, which also serves as a backdrop to the 18th green, is iconic. My home club, Davenport CC, has a similar bridge linking 10th tee & green, also serving as the background to the 18th hole. Are there other bridges on golf courses worthy of mention? The Bridges at Rancho Santa Fe obviously comes to mind; Pasatiempo has some pretty good ones; TOC obviously has one on the 18th hole.
It's not nearly as grand as the Bel Air bridge, but I suggested when we were building Rock Creek that it would be good for walkers to have a little bridge on the 13th hole instead of going down through the canyon and back up, and I was so pleased when I went back for the opening and they had built it!
I can't think of many iconic bridges on golf courses but I suppose the one on the 12th at Augusta has got to qualify. The Sarazen bridge on 15, not so much, considering that it's really not even a bridge but more of a dam.