Greg Lussier has a great layout that has been published in the trade magazines. In these two threads, he discusses the aspects of building a layout to emulate the real Milwaukee Road. The original threads are in the Fallen Flags Forum>Chicago, Milwaukee, St. Paul and Pacific. Here is the very first thread where Greg began planning the layout. This thread covers planning and decisions about what to include or exclude. The third (labeled part 2) thread is currently active and discusses the construction of a great bridge for the layout as well as other models and areas. As an example, here is a photo of the long bridge. Yes, this is a model!
I just received information from Greg that there is a third thread about his layout. Check for that thread here or in the modified links above.