Reply to "The Allegheny, Conemaugh, and Cumberland -bench work is done (mostly) on to laying track!"

Next up is the mainline...  

This is a pretty standard double track with a reversing loop and a couple of interlockings that allow trains to change direction and/or change tracks.  Minimum mainline radius is 40" (O-80) with a handful of O-72 in the reversing loop.

I've left the lower slide layer turned on so you can see where it connects at the top of the layout, and then you can see in the middle is the "upper slide" that ascends to the "high line" and engine yards.