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 ...

State officials are considering replacing the 74-year-old Tobin Bridge with a tunnel, prompting mixed reactions from Boston and Chelsea residents. Iris Arroyo said she won't drive over the bridge.

That group also includes Boston’s Tobin Bridge and the Sagamore and Bourne bridges on Cape Cod. The NTSB said its report “does not suggest that the 68 bridges are certain to collapse,” however.