Incidentally, the Wikipedia article on the proposed Strait of Messina Bridge includes a link to another proposed project; the Strait of Sicily Tunnel, which would link Sicily and Tunisia. There is also talk of a bridge or tunnel at the Strait of Gibraltar.
And I get that this proposed bridge may not be a good idea. But it also bothers me that the United States doesn’t seem to build things like it any longer. In the earlier part of the twentieth century, things like the Golden Gate Bridge or the George Washington Bridge were constructed. There seems to be less of that lately, except for replacement bridges like the one that replaced the Tappan Zee Bridge.