The interstate system is almost profitable for the government. Fuel taxes raise somewhere around 30 billion to 40 billion a year, and the amount spent in inters

The interstate system is almost profitable for the government. Fuel taxes raise somewhere around 30 billion to 40 billion a year, and the amount spent in interstate system maintenance every year is about that amount. If they increased the tax slightly, and stopped siphoning money off of it to fund non-road expenditures, it would be in the black.