Joe and Mark
Overall dimensions 36X22 feet
Loop to loop it only looks like a double main.
First two photos is the access first version and current version
Clem,
Your layout was so much fun to run on. When I was at your home I ran my GS64 for hours.
I have never run the grease out of a locomotive gear box before.... first for everything.
I hope my layout rebuild will provide as much fun as your layout did that evening...