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 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 out of the ...