There are stretches of highway in Kentucky that got repaved for no reason at all except that they suddenly had the money to do it.
Incorrect.
The money spent doesn't
literally get flushed down the sewer, it ends up in
someone's pocket. No doubt there are plenty of union heavy equipment operators, asphalt suppliers, surveyors, etc., who got a nice piece of that money.
There's also no doubt that some was shared with politicians in the form of stock dividends (thanks to part ownership of asphalt suppliers by extended family), campaign contributions from the heavy equipment operator's union, and so forth and so on.
So you see, there were probably a
lot of
very good reasons to do so.