... In February of this year, I spoke with a worker at Mount Mitchell State Park, and he told me the following:
1) The Blue Ridge Parkway road construction/ detour was going to take a little longer than Summer (2008).
2) The Mount Mitchell summit, itself, was to be closed until at least mid-to-late July (2008), due to construction at the summit observation deck.
Perhaps these projects are both still incomplete?
It appears further research is needed.