One of the two footbridges in Valley gardens over Butts Beck. The heavy cast iron girders supporting both are obviously a re-use and I was told they were from the railway bridge over the canal at Salterforth but After being reminded yesterday of the iron bridge that carried Rainhall Road over the railway I am almost certain that's where they came from. Those girders were the right depth and even the design cast into them is the same.
So, until someone convinces me differently that's my source for the girders under the footbridges in Valley Gardens.
It was a forgotten corner but thanks to Mick putting this image up on the site it is now remembered.