Well, the question was about any change in appearance and all I can tell you is that, as someone who's been staring at the thing for going on 28 years, it doesn't look noticeably different to me. You'd hardly notice even the additional concrete but I recall them doing the work on that so I know it does appear a little different (not much really). But as I said, I don't even recall noticing work being done to the steel.
Remember that both this bridge and the Golden Gate are under constant maintenance. There's painting and inspection being done almost constantly. So the presence of netting here and there or people working up on the structure is not unusual. And unlike the recent closures required to do work on the cantilever span, I can't recall anything done to the suspension span that required a closure.