"MIG" wrote in message
m...

The Greenwich viaduct?

I believe that includes the only ever railway swing bridge. But that
isn't in use in that function any more.

Deptford Creek. By no means the only swing bridge - others included one over
the entrance to Royal Victoria Dock (to retain access to the Silvetown
Tramway when the North Woolwich line was diverted via Custom House), one on
the surface route over the link between the Victoria and Royal Albert Docks
(retained so that heavy freight trains would not have to negotiate the
gradients into the Connaught Tunnel), and across an Oxford Canal branch on
the entrance to Oxford Rewley Road (LMS) station. I am sure there were many
others, though I suspect Deptford Creek was the first.

Peter