BVS
Blue Crack Supplier
I was looking for the pic that showed the bridge off to the side, for it had a pretty good view of how much it arches, but there are far too many pages to sift through.
Now that I look at it again, it will probably have enough arch to be a fixed bridge, but if it's moving then the baracades around the catwalk are going to have to be set pretty far back on the interior ring side in order to create a safe head room space.