On 9/8/08 the road was a bit challenging but not bad with a high clearance 4WD. Nothing compared to S. Colony IMHO. Not sure how a Subaru would do but I‘d be comfortable with any 4WD truck or SUV on this road. The first 200 yards were representative of the rest of the road (though runoff could change that), so check this section out and decide if your vehicle is up to it.
Note that the restroom at the upper trailhead is closed. The forest service sign says it‘s due to freezing temp‘s. But someone I spoke with in town said it was closed in July also. There is a public restroom facility on Henson Creek Rd. about 100 yards past the Nellie Creek turn off.
Good camp sites at the upper trail head with even better sites a half mile below, where the road opens into a large meadow for the first time on the drive. Several other sites along the road as you drive up.