Maude was pulling Caledonian Railway Third Class Corridor Compartment No. 1375. I think it also traveled south with Caledonian Railway Brake Corridor Composite No. 464
73941 (SB 08-4x4/4S-RT) tamper sitting in Dunblane Station getting ready to head down to Stirling to depart the possession on the morning of the 14th of January.
https://www.thecourier.co.uk/fp/news/local/perth-kinross/1810408/driver-charged-by-police-after-supermarket-lorry-bashes-perth-bridge/
street view of bridge
https://goo.gl/maps/LbjEkhQQhRqMr2jU6