On top of what 'sempron64 said: there was a plan to construct a subway tunnel between Brooklyn and Staten Island[1], but construction was canceled nearly a century ago.
The Verrazano Bridge itself was designed under Robert Moses's eye, and he shut down the idea of a subway link early on[2].
The Verrazano Bridge itself was designed under Robert Moses's eye, and he shut down the idea of a subway link early on[2].
[1]: https://en.wikipedia.org/wiki/Staten_Island_Tunnel
[2]: https://www.nytimes.com/1956/04/09/archives/moses-bars-train...