Wearmouth Bridge
...that the first Wearmouth Bridge in Sunderland was the longest single span cast iron bridge in the world when it opened in 1796?
...that the first <b id="mwAU4"><a href="./Wearmouth_Bridge" id="mwAU8" rel="mw:WikiLink" title="Wearmouth Bridge">Wearmouth Bridge</a></b> in <a href="./Sunderland" id="mwAVA" rel="mw:WikiLink" title="Sunderland">Sunderland</a> was the longest single span cast iron bridge in the world when it opened in 1796?