Yes and no, London bridge is in London and there has been a bidge on the site for 2,000 years.
The current one was opened in 1973.
However the previous one which was in place from 1831 to 1968 is...
It is a prestressed concrete box girder bridge. Unless of course you mean Tower Bridge (which many people mistakenly call London Bridge) in which case the answer is a combined bascule and suspension...
The present London Bridge, in London, is a pre-stressed box girder bridge. Tower Bridge is often mistakenly referred to as London Bridge. The old London Bridge was dismantled and shipped to Lake...