Bob, I remember those CT toll booths all too well. The state eliminated the toll booths several years ago due to some deadly accidents, one of which happened here in my town.
As far as I know the revenues now come from taxes. Not sure if it's the gas tax, state income tax, or some other combination.
Every now & then I read of some proposal to bring back the tolls, but I don't know if that would have much support now that everyone is accustomed to driving without that system. Certain highways here are pretty much "parking lots" as it is.

If you're not part of the solution, you're part of the precipitate.