Interstate 99 is an abomination - as it broke the numbering system.
I moved to Arizona from Ohio. In Dayton, the I-75 S curve-—and I’m not making this up-—was under construction since 1985 when I moved there. 31 years.
We would vacation in AZ at my mother’s house in the 1990s. Late in the 1990s, they began construction of the 101 N/S route, and the 202 loop. These are major, huge construction projects. I think they finished both in five years.
Yes, roads can be fixed by government, and maintained well. I’ve done a lot of historical research on private roads. Technically, totally privately funded roads are possible, but there are a host of legal problems about collection. For example, if a car has a chip and is behind on payments, can it not get on? How? Do you have a computer sensor disable the engine? Do you do this while the car is in the queue? Can you do it if the past due bill comes up after it’s on the road? What if this causes an accident?
The original private roads failed, not because entrepreneurs couldn’t build and maintain them, but because not one could be secured so it could make a profit. “Shunpikes” appeared everywhere, negating the “turnstyles” that paid for the roads.
I know Disney has private roads in Florida, but they aren’t toll roads. The cost of the road is built into park costs.