The tolls on the new Tappen Zee bridge are expected to be $15, and even that might not be enough to fund it after the hole Coumo blew in the transportation budget after deciding to pillage a general fund instead of raising tolls for commercial vehicles last year.
In my earlier comment I mentioned the Rockaway Beach Branch. That right-of-way would require only a bit of cleanup, some maintenance on a few bridges, and switches to connect to the A line and hundred feet of tunnel in Rego Park, and we would have a new subway line in Queens with access to JFK. We are talking maybe a hundred million dollars, assuming competent engineers and contractors are hired -- a fraction of what the MTA has been spending trying to get the Rail Control Center online.
Not that that should give us any hope for an expanded subway system.