[JohnW]

Actually it was a guy called Jack Wilkinson. The only reason I know this is because he had the same name as my father.

I think referring to the viaduct as being at Priestly Clough is a little misleading. It was actually at Shoe Mill and that was the name of the signal box which stood a few yards north of the viaduct. I spent many hours down there in my early life. If you go to Atarah's site "Accrington Uncovered" go to the "Industry" section and page through the photographs, she has a picture of the "Shoe Mill" showing the viaduct in the background. If she reads this, perhaps she would be kind enough to post it on here for all to see. In the meantime, here is a picture of the signal box, the viaduct would be to the right of the picture.