Most of your problem is the expansion joints where the slab has sunk a bit. Think that's bad try I-55
I had the same problem. My 2012 Ram has leaf springs, so not sure about the airbags. I added a set of Bilsteins. Definafe improvement. Also added stable loads to the springs. Huge improvement. You might also try letting some pressure out of the rear tires. Not a lot, but some. Slowing down is the quickest easiest solution. After the shocks and spring helper, roads I used to run @ 45 I can usually run @ 60. Still some porposing but not enough to give you a headache.
