Earlier this afternoon
On one bridge. looking at another two
I'm on Ferry Lane bridge (over the River Calder) on the road between Stanley & Altofts
The 'Bow-String' Aquaduct carries the Aire & Calder Navigation Canal. over the Calder
Grade 1 listed, built 1837 - 1839
There's a modern concrete aquaduct behind it, as there was a lot of bulk carriage on the canal, & the old bridge was suffering from hits by barges, the new one opened in the mid 1970s
Plus larger bulk-carrier barges were too close to the bottom of the 'tank', & could (feasibly) rupture it, allowing the Canal to empty into the river, & subsequent risks of the lack of (water) pressure contributing to collapses of the canal banks
This refers to the road-bridge that I'm on
https://britishlistedbuildings.co.uk/101261690-stanley-ferry-aqueduct-normanton#.XSilkXdFzIU
https://www.geograph.org.uk/photo/878958
Both seen, from the next road-bridge, over the A&CNC;
https://www.geograph.org.uk/photo/6093010