I posted this on the O-27 three rail forum in order to answer some questions I had been asked about how I worked Superstreets into my layout, but someone suggested I post the diagrams here, too. I enjoy looking at other track plans so I hope people like looking at this.
Note: I do not use track-planning software. I planned my layout "freehand" with graphics in MS Powerpoint. I have about 415 feet of Fastrack and a bit less than half that of roads, all on about 350 sq. ft of bench/shelves, and 22 switches. All Lionel.
Overview: my layout is in a finished attic. It is far from perfect but I am particularly pleased with the three-dimensional nature of it: every loop goes up and down and over and under other things and other loops. It does not look nearly as crowded as it appears on the diagram. Dotted lines are in tunnels or underneath the scenery. Overall it is a bowl of spaghetti that has a lot of action and movement with every train and road coming close to every one else.
Railroads. I have four loops, as color coded, and six sidings to park trains. 100% Fastrack
Roads: I have just under 200 feet of Superstreets, etc. Note: whenever I go out of sight (the dotted lines) I use an SS-track converter and use normal O-27 radius track - cheaper, I can use switches for my SS vehcile storage sidings, and the 27" radii are easier on the vehicles. I also have the lake with one moving boat (and another on the way) and may doing moving ducks/fisherman or something on the Pond someday. Actually the helix is mis-labeled. It goes from the yellow down to the beige coun try road loop.
When I say it does not look crowded here is what I mean, this is take from the the very edge of the stairs (to the right in the picture) looking left.
