Pulled our 30 foot TT thru there twice last week.
A couple of years ago they significantly widened the pavement on both sides of that sharp blind curve you refer to. It is much better but the trucks seem to still coordinate meeting each other there on the CB.
They are working on about 1/2 mile of the road - not sure what they are doing - but it is ONE WAY right there. They have those portable traffic signals set up on either end, with a "guaranteed" wait time not to exceed 3 minutes.
While the road was a bit narrow in this section, the biggest problem we had was rafting buses and raft traffic. We went thru both times on Saturday mid-day and the creek was really busy. Much congestion on both sides of the road and lots of slow traffic. But, nothing I would detour for.
I WOULD, however, strongly suggest you avoid Chattanooga. We had to detour thru Georgia going and coming to avoid 10+ mile traffic stoppages on I-24.
