Just a note on Westminster Bridge: dating and attribution of Canaletto paintings is sometimes difficult. It's strange if this one is from 1747, because the bridge is shown complete, when in fact it was opened in November 1750. (But the artist may have sketched in what remained to be built...)

The Monet painting is rather more than a couple of years later -- say about a century after the Canaletto and half a century after Wordsworth's sonnet. No?

If you like, I'll put something up in another Bridge Blogging about London's bridges, particularly Old London Bridge, the one that is falling down, my fair lady. (another bridge poem). Let me know when that might fit in with future subjects.