Yes, in Texas, once upon a time, we actually had roads that went from being tolls to being free. Then the Texas Tollway Authority was established. Such an event will never be allowed to occur again.
I hate toll roads and avoid them like the plague. Unfortunately in some areas it is really hard to do so unless you know the area pretty well. The toll roads around here aren't really any less congested than the freeways, they are just lots more expensive to drive on.
Thanks, guys. Have to admit surprise that you could find more than one example.