Tunnel list for BRP
https://www.virtualblueridge.com/parkway-places/tunnels/Everything from MP 397.1 Grassy Knob Tunnel on down are south of Ashville. They are all round roofed, the height is at the edge white line. Max height is at the centerline. You need to know your height accurately, not just guess.
Otherwise, its a nice ride. Too many people want to drive thru like its a freeway. If you drive 40 or so, people will tailgate you, honk horns, look annoyed, etc. (speed limit is 45).
The last section from US 19 to the south end in Cherokee is bad pavement, broken up. The rest is nice. There are numerous pull offs and overlooks, so lots of places to stop and look, or simply get out of the way of others.
Once on it at Ashville, with your big rig, I would not get off until US 74/23 at Balsam. US 276 and NC 215 are steep and winding going down.
Lickstone Ridge and Bunches Bald tunnels are both between US 19 and the south end. They are the shortest ones that could be a problem for you, so you might consider getting off at US 19 and taking it south to Cherokee.
Follow this link to the official maps of the BRP. Click on #4 to see an enlarged version of it.
https://www.virtualblueridge.com/maps/Charles
'03 Ram 2500 CTD, 5.9HO six speed, PacBrake Exh Brake, std cab, long bed, Leer top and 2008 Bigfoot 25B21RB.. previously (both gone) 2008 Thor/Dutchman Freedom Spirit 180 & 2007 Winnebago View 23H Motorhome.