The federal gas tax has been 18.4 cents per gallon since 1993. That's not nearly enough to pay the average state's transportation infrastructure repair bill. In fact, estimates the American Society of Civil Engineers, the average annual funding gap is $94 billion.
With one highway bill extension under way and Congress dead set against increasing the federal tax, more and more states are taking matters into their own hands.
According to the Citizens for Tax Justice and the Institute on Taxation and Economic Policy, drivers in Idaho, Georgia, Maryland, Nebraska, Rhode Island, and Vermont will be charged more at the pump as a result of laws taking effect at the start states' new fiscal year.