With the addition of a small raised level in the corner of the layout, Taihoku 1937 is now track complete. Adding the supports to the wooden bridge went well, and it seems level, stable, and strong.
The rest of the upper level seems to have been fixed to the base surface quite well. No issues with movement yet.
I even started cutting out the planned pond, removing one layer of the hollow core door. Our cat also got involved in the photoshoot.
Next step is to connect all the feeder wires together into a single plug for the controller, then to start planning the terrain.