A barge passing beneath bridge 74A on the Liverpool/Leeds canal.

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   Colin Beveridge (icecolbeveridge@mathstodon.xyz)'s status on Sunday, 01-Dec-2024 08:02:33 JST Colin Beveridge

   Today, I dragged @StuartBeveridge to Chorley to see a fantastic bridge.

   Because the railway and canal are at such a sharp angle, a normal arch wouldn't stay up. Instead, the stones are hand-carved in curves so that the joins between them are perpendicular to the bridge's weight.