Naturally, they're not about to save the money, and they sure as hell aren't going to give it back to taxpayers. No, they're looking at how to spend it. Maybe they could fill in a few potholes. Again, not likely: they want a new tax for that. Sure, $31 million could get a lot of road maintenance done, but that's kind of like asking why there are Marines on every U.S. Navy ship: sheep would be too obvious.
Never go for the obvious. Not in Portland. There's not one functional brain cell in the entire Portland City Council.