Got a little bit more work done on this building. I've been using a combination of goop (in most places) and yellow wood glue (for the wood-on-wood places) to reassemble and reinforce this structure. I have the "overhang" area about done. I was going to secure it to the main building permanently, but I actually think it would be best to keep it separable. Here is my progress so far... clamps have been essential to this somewhat drawn out process:
A rail spur runs under this loading dock shown below.
Now that the reassembly and reinforcement is over, I can start doing some gapfilling, making the roof, adding the lighting, and refinishing the back of the building.