This week's #RailNatter is talking swing bridges, bascule bridges, sliding bridges... Because we're attempting to provide an exhaustive list of Britain's moveable railway bridges that are (a) still in use and (b) largely in the same form as it was when it functioned, even if it has been welded shut.

How many are there? Will I miss any? It's anyone's guess... Join LIVE to find out!

Watch  @Network Rail 's terrific little video on the Goole (Skelton) Swing Bridge here: https://www.youtube.com/watch?v=pzeTidU0INA

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