Earn Viaduct
There may have been several viaducts bearing this name. This entry refers to the one near Highlandman Station.
Rebuilt by Henderson, Matthew and Co, as part of a programme of work undertaken by Thomas R. Barr. The programme also included the reconstruction of the Isla Viaduct and Glenury Viaduct. The original Earn Viaduct had nine 30 ft timber spans on timber trestles. These were replaced by four wrought iron bowstring Warren truss girders, supported by skewed cast iron cylindrical piers, sunk to solid foundations, and filled with concrete.
The Caledonian Railway had advertised for tenders for the rebuilding work in 1883, the Piers to be of cast iron cylinders filled with concrete, and the superstructure to be of wrought iron. There would be about 162 tons of cast iron and 148 tons of wrought iron.[1]
The replacement of the Isla Viaduct and the Earn Viaduct were addressed in Engineering in 1892, with the emphasis on the Earn Viaduct [2]
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