Hi - attached is first draft of track plan of Authementville Division of the SP. I intend using Noch N-scale helices at either end to go down to lower level staging. The left hand helix will have buildings above it, the right hand some track work. At the right, there may be a Nn3 narrow gauge line (possibly with some mixed gauge trackwork). The right hand end of the plan is not yet finalized. At the left, the intention is to use Atlas Code 55's set Needham Junction layout (with some tweaking). Any critiques of this plan are very welcome!