Alness Viaduct is a Grade B listed building in the Highland local planning authority area, Scotland. First listed on 25 March 1971. Viaduct.
Alness Viaduct
- WRENN ID
- north-cinder-saffron
- Grade
- B
- Local Planning Authority
- Highland
- Constituency
- Caithness, Sutherland and Easter Ross MP: Jamie Stone (LD)
- Country
- Scotland
- Date first listed
- 25 March 1971
- Type
- Viaduct
- OS grid reference
- NH 654 695
- Coordinates
- 57.6952, -4.25829
- Source
- Historic Environment Scotland listing
Description
Alness Viaduct, designed by Joseph Mitchell and completed in 1862, is a long double-arched structure featuring smaller flanking arches over the roadways on either side of the river. It is constructed of coursed rubble with tooled ashlar dressings. The viaduct has a large square buttressed and crenellated central pier, along with a cutwater. The segmental arch rings over the river and roads are chamfered in ashlar, while the small central arch is adorned with rusticated voussoirs and a carved crest above. The structure is topped with a coped ashlar parapet.
Local climate
Alness Viaduct sits in a wetter-than-average part of the UK, with an average of 1,040 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 50% of listed buildings.
It experiences an average of 65 freeze-thaw cycles a year, more than 99% of listed buildings. Of these, 46 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.2°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
More on this building
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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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