The tunnel at Mobile on I-10 can back up a few hours at times.
We traveled Hwy 98 to I-65 and went north to I-165, south to ALT 90. On the east side of Mobile river we got on I-10 in the middle of Mobile bay.
I-10 west bound traffic was stopped a mile east of the exit.
On our return trip we were on I-10 to Hwy 98, exit in the middle of Mobile bay, traffic was backed up about the same on I-10. To ALT 90 to I-165 to Hwy 45. Hwy 45 to Brooksville, MS. ALT 45 to Shannon, MS. Hwy 45 to Tupelo, I-22 to I-269, back to I-55. It was a bit slower but didn't have to deal with Hattiesburg and Jackson traffic.