After a more than 6,300 foot journey, the tunnel boring machine nicknamed “Chessie” has fully completed its task of excavating what is planned to become a new expanse of the Chesapeake Bay Bridge-Tunnel (CBBT).
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An expansion of the Chesapeake Bay Bridge-Tunnel (CBBT) reached a milestone this week with the tunnel boring machine “Chessie” breaking through to the end of its tunneling path.