The Culloden Viaduct, known also as the Nairn Viaduct or the Clava Viaduct is a railway viaduct on the Highland Main Line, to the east of the city of Inverness, in the Highland council area of Scotland.
It was opened in 1898 as part of the Inverness and Aviemore Direct Railway, which was built by the Highland Railway. The 29 span viaduct crosses the wide valley of the River Nairn. At 1800 ft (549 m) in length, it is the longest masonry viaduct in Scotland.
The viaduct is a Category A listed building.
Culloden Moor railway station was situated at the northern end of the viaduct, but the station was closed in the 1960s.
Coordinates: 57°28′41″N 4°03′46″W / 57.4780°N 4.0627°W