In 1991 I made a USA road tour with my family. We hit 30 states plus Ontario, and drove just over 8000 miles. We got as far west as Las Vegas (omitting California because we had made a separate family trip there earlier that year). I thought it might be interesting to collect various items as trip souveniers and so I started a toll receipt collection. It wasn't much of a collection. After I left New York State, I think I paid one toll to reneter the US north of Detroit, and then single tolls entering and leaving Chicago. That was it. I never paid another toll.
That's why I explained things the way I did. There's a reason why folks in LA call them "freeways," you know.
ML/NJ