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.
When driving on I-95, it’s super obvious when you enter South Carolina. The road is shit, but then immediately good again when you cross into either GA or NC.