My first trip down I 95 from Hartford, CT to Ft Lauderdale was Spring Vacation 1961. I 95 was only 1/2 done, the rest was on 301. Many of the interstates we have been on were 45 mph to avoid teeth rattling. Upper portion of PA I 81 and I 84 about the worst. Some years ago, I 90 from MT to ID required driving around the big cracks in the road. TN is quite good, but FL is the best with no freeze lifts in their roads.
2019 Jayco Precept 31UL
Toad 2013 Honda CR-V EX-L
6 Prior Fifth Wheels and a Leprechaun Class C