The modules that were posted earlier have been updated
The following is a set on modules design to fit on six foot shelves. The 90° crossings on the module ends indicate the space for a six inch interface track, two crossings plus two inches.
The ideal is to select the desired modules and cut and paste them to get a layout design.
Have fun
The Tinker Toy approach to layout design.
I like it.
Chip
Building the Rock Ridge Railroad with the slowest construction crew west of the Pecos.