From the GP site:

82
Bird Creek Meadows
Gravel - One Lane
06/05/2010: Driveable to the Tract D boundary

Can somebody tell me where the Tract D Boundary is?

I recall once seeing a tract D... but I can't find my Mt. Adams map at the moment.

You can assume it's driveable all the way to the Roaring Creek/Bird Meadows trailhead.

Interesting... there will be a couple of indians sitting sitting in a truck and requesting that each climber pay $10 for a permit to enter their land.