Last update 2 February 2016
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Like tunnels, viaducts are often a vast engineering feature and are by their nature clearly visible to all. This listing attempts to catalogue all British viaducts on the network current at 2016, giving their lengths where known. Please note that lengths quoted can vary depending on measurement source.
There are varied opinions over what constitutes a viaduct and what a bridge. It is not this site's intention to attempt a set definition acceptable to all. Broadly, those included here have the word 'viaduct' in their official title. Certain large bridges are also shown where they provide a complete picture (principally where there is a viaduct either side).
Where possible, start and end mileages are given. Sometimes, only one distance is given, as recorded in official documentation. Over the years, two main conventions have been used in recording viaduct mileages as a single point:
In some cases, it looks like the 'official' distance is placed one chain in from the low mileage end! There was undoubtedly consistency at one time, but the mix now appears quite random. Even when both end mileages are known, they are not always correct, so the astute will spot occasions when the length does not match the start and end points. In short, the data given is as complete and as accurate as is known.
Viaducts are grouped by name with cross references to alternative names where applicable.
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