No, London Bridge Was Not "Created" on 17 March 1973

The date 17 March 1973 doesn't mark the creation of London Bridge. It's a category error. Here's what actually happened:

• The current bridge (the fifth at this site) was completed and opened to traffic in 1973—construction ran 1967–1973.
• No single "creation date" exists for the entity "London Bridge." It's a 2,000-year succession: Roman (50 AD), Medieval (1209), Rennie's (1831), Current (1973).
• 17 March 1973 may be a conflation with another event (e.g., a ceremony, a traffic switch, or simple misremembering). The official opening by Queen Elizabeth II was 17 March 1973—that's likely the source. But the bridge existed before that day; it was opened, not created.

The Real Origin

The first London Bridge was built by the Romans c. 50 AD—a timber military crossing at the lowest tidal ford. That's the creation date of the concept and the site. Every successor is a replacement, not a creation.

So: opened by the Queen on 17 March 1973? Yes. Created then? No.