How are underwater expressways/highways built? 296 viewsJanuary 1, 2024 Question98.82K May 17, 2023 0 Comments How are underwater expressways/highways built? In: 2 5 Answers ActiveNewestOldest Anonymous Posted May 19, 2023 0 Comments Most commonly two ways of doing it: * Drilling through the riverbed like any tunnels * Build sections of the tunnel, sink them underwater and connect them, then drain the tunnel. You are viewing 1 out of 5 answers, click here to view all answers. Register or Login
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