Riddings Viaduct
near Longtown, Cumbria, and Langholm, Dumfries and Galloway.
A nine-span railway curved viaduct built by the North British Railway. Now disused. Grade II* listed.
1862 Opened
1967 Closed
The viaduct carried a single line track over Liddell Water, the centre of which represents the border between England and Scotland.