The “Tom Landry Highway” aka I-30 from Dallas to Cowtown used to be a toll road, only one I know of that ever had the gates torn down. He should just have hooked up with the Spanish company that builds and manages the ones here in Texas.
The Connecticut Turnpike is another. While the road was paid off, the state thought they could milk a few more tolls. Too many collisions at the toll plazas was the final straw that drove the decision to remove the tolls.
Kentucky’s toll parkway system had the last of its tolls removed a couple years ago. Also, the Astoria Bridge (Route 101) between Oregon and Washington had its tolls removed in 1993.