I-75 at Chattanooga

It meets Federal guidelines which don't allow left exits. It's better for the I-75 thru traffic, but the interface with I-24 is not. It's well marked, but there are obviously people not looking, or following old GPS units. I do not think the next phase will help either, it's just adding more lanes that don't really go anywhere, more parking. It does not address the root problem which is 6 miles west, the 4 lanes from exit 178 US-27 north to exit 167 I-59 south. TDOT needs to add 2 more lanes each way for the 11 miles to I-59.

Whoever laid out the new lanes when you’re coming from Atlanta and going to Nashville through Chattanooga should be fired. It’s way worse than it was before the changes.

Good luck. Plan carefully to hit town off rush hour in both Chatt and ATL. I've done the bypass thing in Cleveland and it works well. Good enough road into Dalton but then you are still north of ATL.
South of ATL the north bound lanes are closed so expect the lane shift and closures along with the headache. Is this a snowbird thing or a limited time vaca thing? I avoid ATL at all costs and go down 441 corridor. Less stressful but yes, more time involved.

I-75-thru traffic isn't that bad. I would stay over to the left for a few miles. The right lane slows with people trying to cut over to I-24 at the last minute, and coming off I-24.
I-24 is a total cluster!

We had no major slow down on I75, I24 (if I have the numer right) was a terrible mess with construction. That may be finished. Expect big slow down in Atlanta tho.

I drive every now and and then thru that area & no matter if it is road work or a wreck Chattanooga area is a c**p shoot just like Atlanta..