It’s a bad idea to make a bridge out of cast iron – it’s brittle and doesn’t handle tension well – but the very first major bridge of this type opened to traffic in 1781 and still stands today.

Tk420 [CC BY-SA 4.0], via Wikimedia Commons
The bridge was only closed to traffic in the 1930s; today you can walk across it and admire this early artefact of the Industrial Revolution.
Categories: Europe History Modern history Places Sciences Technology
The Generalist
I live in Auckland, New Zealand, and am curious about most things.
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