Logan is totally able to be connected by rail, but it's going to have to deviate from the existing rail lines at a place called Collinston in order to avoid running through the bear river canyon. The current freight line through there is limited to 12 miles per hour as it negoticates some tight turns, a tunnel, and two big bridges. There is no good way to turn that route into a high(er) speed commuter line - it would be easier to widen I-80 through Parley's Canyon. (Hint hint)
It makes sense to follow the existing tracks from Ogden northward, making stops at
-Ogden Business Park
-Pleasant View
-Willard
-Brigham City
-Honeyville (Perhaps at the hotsprings)
-Deweyville (immediately adjacent to Tremonton)
-Collinston
At Collinston you'll need to make a hard right and follow the current route of State Road 30 over Collinston pass. That road is currently a 2-lane highway, and it will need to be upgraded someday. When that happens, leave a median wide enough for a future rail line. New Mexico did this with their commuter rail line called the Rail Runner:
Basically, FrontRunner would stay in the median of State Road 30 until reaching Logan. (That's a distance of just over 14 miles; the Rail Runner remains in the median for 12 miles, so about the same.)
I'm confident this line would work because it already worked 100 years ago. The
Utah-Idaho Central interurban railroad used to run this route. While the
exact route can't be rebuilt today due to the ROW becoming abandoned and built over (it's kind of curvy and we wouldn't want to rebuilt it
exactly anyway), it proves that trains could make it over Collinston pass 100 years ago and thus could easily do the same thing today.
It is amazing to me that 100 years ago, these are the routes you could take on electric trains in Utah:
Now if you want to take an electric train you're limited to TRAX in Salt Lake County.
I hope we preserve ROW for future FrontRunner expansions, but I don't think it would be a good use of money to actually
build these expansions now. I think it's really important that we build up the core of the FrontRunner line from Provo to Ogden (2 tracks + electric wires) in order to allow trains to run fast and frequent. You know, finish eating what's on your plate before you go get seconds.