The forest service will normally give you all the info they have on road conditions to try to help the public be safe. Normally, the folks in the field will relay info to the people working the phones and the person that answers will know about roads with washouts, closed for whatever reason, etc. They aren't good on snow depths but, in general, they'll know if a pretty-well-used dirt road is impassable. Spur roads or ones way off the beaten path are anyone's guess. In that case, you'll want to bring a shovel and chain saw.
A three or four year old burn should have some good habitat, unless it burned really hot--sometimes those take longer to get the new vegetation coming in. Pick a newer burn if there's one close. Even a 10 year-old-burn can be the best habitat in an area if there isn't anything newer.
Brett, PM me if you want to share info on the 36b burn area. I might be in there this fall. I will have scouted it from my desk at least.