Admittely this is a shot in the dark but the first place I thought of when I viewed the picture is Palisade Canyon in Northern Nevada. I've driven through the area many times on I-80 and the landscape is a match, but more importantly in the far left side of the picture there appears to be another ROW on the opposite side of the river (Humbolt River).
Again, this is just a guess, see more modern pictures here of the location I'm talking about.
More here....
The popular photo location is the twin bridges, your picture could be in a more obscure location.