Design-build contracts valued at $4.5 billion for the world's longest immersed tube tunnel, between Denmark and Germany, were signed in Copenhagen on May 30. Construction on the 18-kilometer ...
Walter C. Grantz, 88, an international expert in immersed-tube tunnel construction who most recently was lead engineering consultant for the 23-mile, $756-million Thimble Shoal Parallel Tunnel now ...
From the column: "I can imagine how happy local walkers and bicyclists would be to have a tunnel like this to walk and ...
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