Charge who? And in what form?
Interstates in Texas are not toll roads.
A little from fuel taxes & vehicle registrations maybe, but certainly not enough to maintain all the interstate (i.e. Federal) highways.
I'm not from Texas, I'm asking the question. I heard, forget where, that most highways are essentially toll roads. Sure there are a handful of bigger ones that cross state lines that are free. But being the biggest state means that most aren't those. The smaller connecting ones are still just that, toll roads. Sure, it's entirely possible an individual never has to pay because their commute doesn't deviate from the one free highway. But for most, isn't the freeway/highway just one big toll road?
I just saw the map and most federal highways revolve around the Houston area going East/West. Wanna go north, pay. Wanna go south, pay.
No, very few highways are toll roads. Houston has 1, Austin has a couple.
Usually the biggest interstates are Federal, then smaller ones are State, then smaller ones are County or City, etc. Very few are toll, at least in the West & South US. I can't speak for the densely populated states in the NE bc I've never been there.