any reason for taking i81, unless it's a time saver I would get on 42 from Blackburg to Saltville, then 91 into Glade Spring. (just to stay off 81, busy with 18 wheelers) could take from glade spring 81 a d 11 to Abington, 75 to 421 thru Shady Valley to Mountain City. I like hot springs to trust...