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 ...
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