Roads are paid for by gasoline taxes, and in the case of the turnpike, by tolls. If you buy gas, you paid for the roads.
Not in my state. Although some of the roads may be paid for by gasoline taxes, we do not have toll roads. Wisconsin's legislature has budgeted approximately $6 billion over the next 30 years out of the general fund for freeway work in southeast Wisconsin (primarily Milwaukee). Freeways are, for the vast majority of them, interstates (I-43, I-94). http://www.jsonline.com/news/Metro/jun03/146821.asp