Bill, my Uncle used to take me on a weekly basis, this is the route we took. Down 151 through Summerville.
https://www.google.com/maps/dir/Chattanooga,+TN+37421/Little+River+Marina+%26+Lodge,+1780+County+Rd+102,+Cedar+Bluff,+AL+35959/@34.627963,-85.6878473,10z/data=!4m13!4m12!1m5!1m1!1s0x8860647f391b9fe3:0xccf02bf3a5927e12!2m2!1d-85.1583064!2d35.041539!1m5!1m1!1s0x888a632061a396b1:0xfbbbcad6fa47c38c!2m2!1d-85.6454156!2d34.23456