Could private companies build and manage roads/highways, or should it remain the responsibility of government?
Definitely publicly owned roads. Private roads cost too much. There are two routes we can take to downtown Tampa. There's a public highway with a toll bridge that costs us $2 round trip, or there's a private expressway in Tampa that costs us about $10.
Google the concept of "public goods".
The very term "public utility" … is an absurd one. Every good is useful "to the public," and almost every good … may be considered "necessary." Any designation of a few industries as "public utilities" is completely arbitrary and unjustified. -Murray Rothbard
...so there’s this toll road around Denver. It’s essentially an example of a private industry roadway. It’s nice to drive on, if you can afford it (we calculated that you could buy a second home for the cost of being a daily commuter on it). It’s also very well maintained, but when they use YOUR toll money to decorate the medians with colorful patterns of rock, you realize that “waste” is not exclusive to government projects. 🤔
It's like most people think we didn't have roads until 1913 with the ratification of the 16th amendment.