If the federal government pays for state road repair, states will let their roads deteriorate until federal funds are received.
If the federal government pays for city street repair, cities will let their streets deteriorate until federal funds are received.
Roads like US27 and I-95 are federal roads. GA49 is a state road.
Federal motor fuel taxes should pay for federal road and bridge repair and construction.
State motor fuel taxes should pay for state road and bridge repair and construction.