Trainz

Probably one for my transatlantic cousins to help out with.

I plan a 3 week road trip in the US next year, likely hitting 6 states in 3 weeks. My initial itinerary so far is San Francisco, CA > Reno, NV > Boise, ID > Bonneville Salt Flats, Salt Lake City, UT > Grand Canyon, Flagstaff, AZ > Durango, Denver, CO.

I volunteer at a preserved line in Ireland and I'd love to see some US preservation work. I'm aware of the Durango - Silverton railroad but is there anything else along that route (within reason) that I could look up?

Any suggestions much appreciated.
Innis