I looked at your link to the Sydney bridge, Aussie, and can really see what a memorable experience climbing these bridges must be. Did you climb this one?
Seeing the bridge from this angle makes you realize how complicated and STRONG such structures need to be. WOW.
Nice study on the bridge Aussie, it's one of those things we take for granted as we trundle over them daily.
I've been up the Sydney bridge and was gutted we couldn't take cameras(in case we drop them!), as it was a glorious sunset behind the city.