Nearly 40 years now but I was remembering a dilapidated bridge across the river somewhere near Roybridge. It was in a bad condition then, missing treads etc, is it still there? I seem to remember that it might have been owned by Alcan?
If it's the one I think you mean, at approx NN 219 810, then it's had some fairly major building works recently:
https://www.lochaberchamber.co.uk/2023/12/alvance-british-aluminium-reopens...
There are also the remains of a bridge at NN285805: https://www.geograph.org.uk/photo/6154515
That's the one! Definately not in use!
