The London Bridge that you are referring to was rebuilt at Lake Havasu City in Arizona.
It didn't. It was sold, numbered, and reassembled in Arizona.
The first London Bridge was built in Roman Times - nearly 2000 years ago and there have been several bridges since then. The current bridge was erected in 1973 and its predecessor which was built in 1820, was dismantled and reassembled in Lake Havasu City Arizona, as a tourist attraction.
The 1831 London Bridge was dismantled in early 1970's and reassembled as a tourist attraction in Lake Havasu City.
London Bridge straddles the River Thames in central London between its north and south banks and connects Southwark with 'The City', not to be confused with the iconic Tower Bridge, which is the next bridge downstream.
Because the original bridge was the ONLY bridge in London at that time.
Tower Bridge and London Bridge.
Tower Bridge is east of London Bridge.
London Bridge. The Olympic rings are on Tower Bridge - not London Bridge.
The London bridge
London Bridge.
What does London bridge represent