There is a high-speed tollway in the Austin, TX area that opened to big publicity as a private/public deal. Now it has gone bankrupt in just a few years. However, these things keep being agreed to.
It’s the Toll 130 extension that runs through the boonies between Mustang Ridge and Seguin, TX. Because this PPP runs through the boonies, instead of a heavily populated area, it did not attract enough users to pay its debt.