Thanks for posting more photos Mark. I like your layout. I also model southwestern Montana, right in the area where I live, but not into the mountains. My freelance railroad connects to the NP at Logan, MT and runs south to Gallatin Gateway which is near where I live. Here I connect to the Milwaukee Road (which did have a spur into Gallatin Gateway which did operate until the grain elevator burned down in th mid 70's) From there, off stage, I also connect to the Gallatin Canyon & Western which runs south down the Gallatin Canyon to West Yellowstone and connects to the Union Pacific. A good friend of mine was building the GC&W and I custom painted a number of freight cars and locomotives for his railroad. Unfortunately, he passed away but the operation sounded so good that I kept it. In my freelance world, the Logan Valley bought out the GC&W but still has equipment still painted for the GC&W.
For years I wouldn't go near a Bachmann locomotive because of past experiences I had with their locomotives. Then they brought out their Spectrum line. I was still hesitant until I read some good reviews in model railroad magazines. I gave their Consolidation a try and was pleasantly suprised. An excellent running locomotive. Their Decapod though was a bust. I have a ruling two and a half percent grade and the Decapod was a wimp maybe being able to pull three or four cars up the grade. It now is a yard switcher. Their 3 truck shay is a nice running locomotive also.
I still operate DC only and it is now hard to find many locomotives that are not DCC with sound. Their Alco S-2 which is in the video in my signature "Switching in Churchill" is an excellent running locomotive. I was impressed with it, but don't really need the sound, but I am a sucker for anything decorated for the Northern Pacific or the Milwaukee Road. My son, who knows absolutely nothing about model railroading gave me a Bachmann Mogul, that is DCC and sound equipped. Nice running little locomotive, but also a wimp on my grades. It is now used to pull a couple of coaches which is about all it can handle for passenger service.
I can see tht you have this thing for bridges. I really like the photo of the trestle. I would have liked to have more bridges, but my railroad runs in a valley but I did manage to get one bridge in. Bridges sure make a train look interesting running through the scenery.
Again, I really enjoy seeing the photos of your layout. Well done. Keep the photos coming.