IDK if it's fit into this in any way, but the "London Bridge" in Lake Havasu was pre-existing and dug out of the ground, and the original was dismantled and tossed in the ocean on the way over, I guess.

I wrote it up here a year ago:

In honor of the passing of E-Lizard-Beast (which was probably last December), here's another fake: London Bridge in Arizona (9/8/2022)

Interesting. I hope for more info