Money isn't what stops me. What the hell, a trillion here or there..
I could imagine some barrier being aestheticly pleasing and engineering-safe. I've not seen one yet, but I haven't looked at the video. Where's Calatrava when we need him.. kidding, talk about ruining the bridge. No, I'd like to hear what the main guy at Arup would suggest - forget his name, something like Carlos Beltran. He's a major innovator and problem solver.