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Road closed because the bridge is out? That is the first place I would look. I think she might have been giving you good advice and you just needed to burn some more boot leather. As you are probably finding out elk hunting is hard work. Much more so than deer hunting. Sounds like you are on the right track though, seeking advice from gammies and biologists as well as on here will go a long ways. I have learned so much from the great people on this site.
I don't have any info on those particular areas. My best piece of advice for you since you are new to hunting and admittedly a little out of shape...always leave the truck walking uphill. This will set the pace for you and when you cannot possibly go any farther the return trip is bearable. Especially if you have an animal strapped to your back. If you can only do 2.5 miles that's ok, that's a hell of a lot farther than most hunters will go. Just remember to save enough energy to return. Would hate to see you on the news with a search party looking for ya. Good luck.