Ole Jacob Ferdinand Bjerke (1874[1] – 26 June 1946[2]) was a Norwegian railway engineer.
He graduated from Christiania Technical School in 1893, and started working for the Norwegian State Railways.
His main achievement was participating as senior engineer with the work on the Flåm Line.
[3] Before the construction could begin, he had been dispatched to study different railway types in the Alps.
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