After seeing this on KSL after seeing it here I went to the comments and found where it is located. It is El Camino del Rey I guess you can Wikipedia it and it gives a lot more details.
Yeah, it's a old video, I've seen it a couple times. I don't think it'd be that scary, there's also safety cables to tie in to along most of it if you were that worried about it.
not for me...I HATE heights.....a couple of those spots where there is no path, that would be really scary, to balance on that steel, and know your life is really in your "feet"