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Near Fiddlers Ferry Warrington
September 22 - 2016

Tower Building 22 September 2016.

Thanks to Brian Thompson for this photo of Bridge Construction from Halton Castle. And this explanation for a member of NWAN Web site.
Yes they are built in situ.
A creeping shutter, mold, is filled with concrete and when set it rises further up, more concrete and rises again so it is a continuous solid beam.
You can see Ron there are holes down the length, like a flute where the suspension cables will come out of.
Brian T