Originally Posted by
pdlamb
Remember, though, that 60-70% of U.S. highway work is done with federal funds. Those state and local projects that aren't pork-barrel funded by the feds (and there's more than meets the eye!) are made possible by state money that's available because of the huge influx of federal money to the state.
The amount varies a lot from state to state but, overall, 46.6% of road funding comes from the federal government.