Perhaps if I feel like it I could include the damaged bridge from Equinox.
That would include making an entirely new bridge. Despite the similarities, they were totally different, from what I saw... Anyways, since you're doing a heck of a lot already, let's leave that idea as, simply, an idea, and focus on the task at hand. I think you're on the right track with importing the damage into THIS bridge. Don't forget to alter the lighting and such for the damaged variants, as it was next to none.
This is epic. I've been waiting for a truly damaged intrepid bridge for a LONG time. The retextured versions I've seen so far are nothing in comparison to what you seem to have planned here. You will succeed. Now, have some coffee, get workin' on this, and efficiently assimilate the day. 8) Resistance to keeping my eye on this project is futile.