Here is a plan I drew up for a 3'X4' N Scale layout. It is loosely based on the Pensacola and Perdido railroad in the late 1800's. Basically, timber is hauled from the logging camp to the sawmill, and finished lumber is then hauled to the wharf for loading onto ships. Since the motive power will be old-time steam with "cow-catcher" pilots, I made all of the spurs so that you could work them from the same direction (except for the interchange spur which is there mostly for effect and to allow for future expansion). Let me know what you think.