Every state charges their own fee per mile to commercial trucks. Filing taxes as a long distance trucking company that operates in multiple states is pretty annoying.
There's also tax built in to every gallon of fuel.
There are also flat annual registration fees you have to pay as well.
Side point here, but that's a very justifiable cost. The damaged to a road is proportional to the fourth power of the axle weight [1]. That's something that amuses me when drivers complain that bike riders don't pay a "road tax". If they did, it would be a laughably low amount compared to what a car driver would have to pay in proportion.
There's also tax built in to every gallon of fuel.
There are also flat annual registration fees you have to pay as well.