Not sure what you guys are smoking, but Chattanooga this summer is a disaster.
We went I-24 WB thru there last Saturday 7/25 headed to Smokys from north ALa. Came to a dead stop about 10 miles from Mocasin Bend and MapQuest said everything was stopped even beyond that point. We bailed off on I-59 south and invented a backroads detour thru Georgia.
Coming back Saturday 8/1, MapQuest showed more stopped traffic on I-24 WB on both sides of the I-75 exchange. We again went thru Georgia thru Dalton and got back on at Nickajack. WB was moving thankfully, but I-24 EB was stacking all the way back to the South Pittsburg exit.
I can't find any news of wrecks or other problems. There is a little construction but other times it shows to be flowing. Chattanooga for us has always been a growing problem for stacking and stopping, mainly because the interstate goes THRU town and not around it. And once you are trapped, there aren't many escape routes other than wading thru downtown with our 51 feet long rig.
We will make more trips in that direction this fall, but Chattanooga is officially off our radar. The drive thru Georgia isn't bad, and at least you are moving at a decent speed.