Shin Railway Viaduct
{{Use dmy dates|date=February 2017}}
{{Use British English|date=February 2017}}
{{Infobox bridge
| bridge_name = Shin Railway Viaduct
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| image = Invershin Viaduct - geograph.org.uk - 1446850.jpg
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| carries = Far North Line
| crosses = Kyle of Sutherland
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| engineering = Joseph Mitchell and Murdoch Paterson
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| mainspan = {{convert|230|ft}}
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| complete = 1868
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| coordinates = {{coord|57.924022|-4.401109|display=inline,title}}
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The Shin Railway Viaduct (also known as the Invershin Viaduct or Oykel Viaduct) is a railway viaduct that crosses the Kyle of Sutherland.The viaduct carries the Far North Line between Inverness and Wick and Thurso. Invershin railway station is at the north-eastern end of the viaduct, while Culrain railway station is a short distance to the south.
History
It was built for the Sutherland Railway by engineers Joseph Mitchell and Murdoch Paterson.{{cite book|last=Hume|first=John R.|title=The Industrial Archaeology of Scotland: The Highlands and Islands|url=https://books.google.com/books?id=HxEBAAAAMAAJ|year=1977|publisher=Macmillan of Canada|page=312}}
The railway opened to traffic on 13 April 1868.{{cite web |url=http://www.scotlandsplaces.gov.uk/record/rcahms/13013/shin-railway-viaduct/rcahms?item=498664 |title= Shin Railway Viaduct |publisher=scotlandsplaces.gov.uk |accessdate=2 January 2015}}
Design
It crosses the river with a single {{convert|230|ft}} span, {{convert|20|ft}} longer than that used at the Dalguise Viaduct by Mitchell four years earlier.{{cite book|last1=Paxton|first1=Roland|last2=Shipway|first2=J.|title=Civil Engineering Heritage Scotland: Highlands and islands|url=https://books.google.com/books?id=rVbbAAAAMAAJ|year=2007|publisher=Thomas Telford for the Institution of Civil Engineers|isbn=978-0-7277-3488-4|page=213}} The deck which carries the track sits on top of rather than between the truss girders. There are two semicircular stone arches in the approach viaduct to the south, and three to the north.
A footbridge was added to the northern side of the viaduct in 2000. This is now part of National Cycle Network Route 1.