Fiddle Yard fairly Complete
I am just about done with it now - here are some pictures. The grey blocks are the supports for the reversing loop overpass that I can't complete until I have built the baseboards along the adjacent wall - as they contain some supports for it.
Making the supports exactly the right height and to a very odd cross section has been hard - eventually I glued three pieces of 24mm ply toegther and that is about right.