OK, so i sent the bridge off to Mark so he could optimize/ check it etc...
and now, thanks to Marks help, the bridge is now at 10k polies, and a load of texture space saved

lightmapping will begin this week

Here attached is what the bridge will look like ingame, and this time at a decent lighting level.
Included is a rather snazzy VR export, much like the one above, but sexier ;)