Thank you, Bob and RJ!
Bob, I'm sorry the prize isn't like winning the lottery! 
I think all the suggestions were good, but many hinge on getting the track realigned first.
RJ, In the photograph Bob copied right above your post, you can just see on the right the edge of existing single track bridge in the lifted position. The new bridge will lift the same way, so it will lift to the left. I'll be making a much more substantial base and hinge system since it is heavier.
