In the 70s my grandfather was telling me that when the bond hucksters
were pushing them for the Turner Turnpike-—1950s-—between OKC and Tulsa that the promise was that they would remove the toll booths
when the 20 year bonds were paid off. Ha Ha Ha!
They had to keep—and raise-— the tolls for “maintenance”.
Really though it was to hit out of state traffic.
Dallas-Ft Worth toll road (now I-30) back in the 70’s was supposed to stop collecting tolls after they recouped the money (decades to get the money recouped), didn’t happen.
Apparently most all people that knew had retired and/or left.
Went to court and the toll road administration lost, so just because they keep charging when the terms and conditions of the contract were ignored, doesn’t mean it’s over.