3-1: The curious case of the copycat coils (leuke link)

When Santiago Calatrava’s Peace Bridge design was revealed this summer, it was hailed as a radical departure for the maestro of bone-white structural flamboyance: a truss, no less, and a red one at that.
Of course, its helical truss design was ambitious but by no means unique, and I’ve covered a couple of similar designs here before. But I had perhaps underestimated quite how many there, so I’m taking this opportunity to put that right.
I’m not seriously suggesting that any of these designs are direct copies of any other bridge (with the obvious exception of the two Happold bridges), but it is interesting to see just how this typology, has appeared, spread, and extended its ambition with ever greater spans.

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