You should be good. The road to thunder ridge is always plowed really well because people live up there. Its the Turkey Rock rd. That sees all the trouble. Go for it!
Even the road to Turkey isn't bad until you get to the downed tree across the road at the bottom of the hill near the creek. We tried to pull it out of the way with our truck but it's in there fairly solid, someone needs to cut it loose from the root and then it should go. Higher clearance with 4 wheel can sneak across (we had an Toyota FJ and Nissan pickup that made it)
I was there yesterday, it was phenomenal! Great temps, little cooler for sunset but just finish on a sunny crag! Some wet ground and water is high in the streams. Small snow patches that will be gone by tomorrow probably. A