Based on your description of distance to Silver and being south of I-90, I think I have a fairly good idea where you are at. Salnave road shouldn't be too far west of you, and for what it's worth I see elk out there south of 90 between Granite and Salnave a decent amount of times each year (see them from I90).
I don't think they hang out there any longer than they do other places, but they seem to move through the area just like they do everywhere else out there