You might have also noticed that the pavement is terrible. Mostly this comes down to the fact that in Europe the fuel taxes 3-4x ours.
So also as a consequence of this: If the US were to use the same per person $ amount to upkeep their roads, US roads would have WAY more money to be maintained. Yet, the outcome is obviously worse.
They'd be liable if even if it was road kill, as they're responsible for ensuring big animals don't go into roads.