I am looking for route options from Myrtle Beach to Gatlinburg. I have done some research already, but have particular concerns about the construction that has just started on I-40 and the height of the tunnels as my Rig is 13.5 and it sounds like the tunnels will only give me inches of clearance. Any alternative suggestions or am I overly concerned as a guy who suffers from OCD a bit with my new 37 FT. class A and a tow vehicle on a dolly. I had a Jayco Greyhawk Class C before this and didn't worry near as much! ???