We spent several weeks in Lake Havasu when we were RVing. The original London Bridge was sold to Lake Havasu when they replaced it. It was numbered by parts, and shipped to the USA. It was reassembled and now crosses a causeway to an island which has shops on it. If I remember correctly, they built the bridge first, then dug the canal under it creating the island.
One of you natives correct me if I am wrong, but that is what I remember. My fishing buddy that I fish with in Oregon lived in Lake Havasu until a few years ago. He sold his house there and moved full time to his home on the Oregon coast.
I took this in 2005. I did not know then that the fishing was so good or I would have tried it. Thought some folks would find this interesting, I had no idea until we visited Lake Havasu. It is a beautiful place to live and play.