Well, you're commuting too far, but anyway: San Mateo has a bridge, you can go via San Jose, and you can go via Marin County.

Even the Bay Bridge is seldom 100% out. It has multiple lanes, unlike a typical rail line.

This is what you need: https://www.watercar.com/

You HAVE a different Bay Bridge. It cost us $8 billion. You damn well had better like it.