I have drove in 49 out of 50 states (never been to Hawaii) and Illinois ranks the worst in my opinion. It’s like they ran out of asphalt and stopped doing any repairs 10 or 20 years ago.
To people not living in the U.S., feel free to complain about your country’s roads too.
I drove through Nebraska one time, and the only thing I remember is how bad that state smelled. “Industrial Rot” was the best way I could describe it