Aberchalder Viaduct

The Aberchalder Viaduct was built to cross a spillway, which allows water from Caledonian Canal to flow into the River Oich after periods of heavy rain.

Real World Equivalent
Viaducts are composed of several small spans and are usually used for crossing a valley, or forming an overpass or flyover.

Viaducts can be found on railways all over the United Kingdom. A particularly famous example is the Glenfinnan Viaduct on the West Highland Railway, around 12 miles from the Biggest Little Railway's starting point in Corpach. The viaduct was completed in 1898, with the railway between Fort William and Mallaig opening in 1901.

Images of the Glenfinnan Viaduct were used in early promotional material for The Biggest Little Railway In The World, as well as appearing in the show itself. The viaduct has also made appearances in a variety of films and television programmes.