Hi Steve,
Looks like you were busy makin' yer bridge. I can see a few problems with your bridge the way you have made it.
The first thing I see is that you are hinging the bridge on a 45 degree angle. This will mean when the bridge is open it will stick out into the room.
Also I think it is on the large side. Once you get it covered with track and scenery, it's going to only weigh more, and could be un- wealdy and down right dangerous if it was to fall closed by accident.
Here is what I think you should do. Make 2 triangle extensions for the bench (orange on my plan) Then make your bridge square. This will make your tracks line up easier and the bridge wont be to heavy. When it opens, it will be out of the way.
Just what I think.
TrainClown