Is Boston ready for another Big Dig? Share your thoughts on the idea of replacing the Tobin Bridge with a tunnel.

The eventual project is all but certain to be enormously disruptive, given the tens of thousands of vehicles that rely on the bridge every day.

The eventual project is all but certain to be enormously disruptive, given the tens of thousands of vehicles that rely on the bridge that carries Route 1 over the Mystic River.

Asked at a community meeting if the state is considering replacing the Tobin Bridge with a tunnel, the project manager leading planning studies responded Wednesday that it wasn’t