Update 7/4/2016:
With the help of my friend Price, I managed to re-assemble the western mainline and Coal Mine Spur. The geometry is a bit different, but the tracks now line up correctly as they approach the bridge.
Here's the area before the work.
And here is the area after re-assembly. 
The track has not been fastened down yet, nor have I added the super-elevation yet (you can see the blue wire for it). This will be done after the bridge is fixed in place. Track feeders pairs have been attached, but not connected. Signalling wires are yet to be connected as well.
Both approaches are nearly ready for the bridge. Before we do that, the artist has to come back and make a few adjustments to Backdrop #4. And then it will be time to install the bridge! Exciting!
George
