Other than glueing the loose parts to the engine house, I didn't get a chance to work on the layout until today. I was going to work on some other areas of the layout, leaving the corner go for a while until I got the engine house. That caused me to change direction. I want to get that built and make sure I can get the track to work. I didn't order the 042 wye switch yet, but have all the others that are needed. I decided to build the lower level tabletop and then support the upper level for the enginehouse, station, and a few downtown buildings above that. For the lower level, I used all but a two-foot section of the large bookcase I tore apart and have been using. Also, I will have just enough plywood to finish the top level. It was discussed long ago on Plan A and Plan B about having staging tracks on the lower level in a similar location. I have no interest in maintaining all those switches, etc here on Plan D. I do think I could use the area for a place to store a few cars that can be swapped manually. I'll see how that goes. You can see I need to raise that section of the backdrop a bit. That won't be a problem.
I then laid the switches and a few sections of straight and 042 track in place for a very rough estimate of how it will work. As we discussed a few weeks ago, I'll need the wye switch and bend some flex instead of using 042, but I think it will work out. I see from this photograph, I got the track a bit more cockeyed than I thought. I still have to add in a triangular piece of plywood to support the front curve.