The financial lookouts who toil in America's transportation departments have been waving red flags for years that there wasn't enough money to keep the nation's 4 million miles of roads and bridges drivable. Now the federal government's top accountant has told Congress it should experiment with taxing drivers by the mile to make up billions of dollars in shortfalls. The debate isn't whether you'll pay more to drive in the future, but how you'll pay and how much.
For decades, federal and state governments have relied on gasoline and diesel taxes to pay for road building and maintenance. By one industry group estimate, the nation needs a minimum of $123 billion a year just to resurface roads and shore up the bridges it has, let alone build anything new.