Project leaders with the Chesapeake Bay Bridge Tunnel reported that Chessie, the tunnel boring machine used to dig the second tunnel, had broken through at the second island.

"Even if tunnel construction is more costly the net benefits may be well worth it." The post Into the Mystic: Boston.com ...

Chessie officially completed her journey, successfully exiting the receiving pit on Two Island on Wednesday. Chessie reached her end destination on Monday evening. Mining was then paused to allow ...

After a more than 6,300 foot journey, the tunnel boring machine nicknamed “Chessie” has fully completed its task of ...

An expansion of the Chesapeake Bay Bridge-Tunnel (CBBT) reached a milestone this week with the tunnel boring machine “Chessie ...

There is talk of replacing Boston's 74-year-old Tobin Bridge, and the replacement could be a tunnel rather than another ...

YO 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.

Plus, we got the Rose Kennedy Greenway! Also, with a tunnel, you don’t have to worry about water levels eventually rising so ...

Last night, MassDOT didn’t rule out turning the Michael J. Tobin Memorial Bridge into an underwater tunnel. It’s been a mainstay in the Boston area since cars started driving on it back in 1950.

Last night, MassDOT didn’t rule out turning the Michael J. Tobin Memorial Bridge into an underwater tunnel. It’s been a mainstay in the Boston area since cars started driving on it back in 1950. “A ...

Asked at a community meeting if Massachusetts is considering replacing the Tobin Bridge with a tunnel, the project manager leading planning studies responded Wednesday that it wasn't out of the ...