by aberbrothock » Wed Dec 6, 2017 8:28 pm
The main line to Aberdeen doesn't seem a likely place to take up track to send to the Western Front. But there is a substantial viaduct between Drumlithie and Fordoun, the next block post south, over the Bervie Water. These viaducts were originally built of timber in the 1860s and by 1918, with heavier traffic, they were life-expired.
Sure enough,Google finds the following plan in the National Records of Scotland:
RHP128756-128758: Three hand coloured contract drawings showing elevations, plans sections and details for renewal of bridge over Bervie Water between Fordoun and Drumlithie (Caledonian Railway): 1918 annotated with the signatories to the contract 14 April 1919
So my guess is a period of single-line working while the viaduct was renewed.
Great to see such a nice example of a Caley diagram. Thank you for posting it.
Graham