Where were the "Galt Line" scenes shot?

Does anyone know what sites were used for the various depictions of the “John Galt Line” in the Atlas Shrugged movie? I am assuming different locations were used for the before, track laying, and completed segments. Tennessee Pass was my first thought for the overgrown track, if it still has rail, Stampede Pass seemed possible too. Hopefully the rail fan community has people who have walked by every scene in the movie, and can identify it, if anyone else has seen the movie. Please, no reviews of the movie or book as that would deserve it’s own thread, at least it treats railroads better than “Unstoppable (2010) did.

Common, someone must know.

Some general answers here - no surprises, though, and no details: http://www.imdb.com/title/tt0480239/locations

Some more answers here, about 1/4 of the way down the page: http://www.aetherczar.com/?p=2015

  • Paul North.