Devil’s Bridge is a term applied to dozens of ancient bridges, found primarily in Europe. Most of these bridges are stone or masonry arch bridges and represent a significant technological achievement. Each of the Devil's Bridges has a corresponding Devil-related myth or folktale.
Local lore often wrongly attributes these bridges to the Roman era, but in fact many of them are medieval, having been built between 1000 and 1600 AD. In medieval times some Roman roads were themselves considered beyond human capabilities and needs, and therefore had to have been built by the devil.
The bridges that fall into the Devil's Bridge category are so numerous that the legends about them form a special category in the Aarne-Thompson classification system for folktales (Number 1191). Some legends have elements of related folktale categories, for example Deceiving the Devil (AT #1196), The Devil's Contract (AT #756B), and The Master Builder legends.
One version of the tale presents the bridge builder and the Devil as adversaries. This reflects the fact that frequently, such as in the case of the Teufelsbrücke at the St Gotthard Pass, these bridges were built under such challenging conditions that successful completion of the bridge required a heroic effort on the part of the builders and the community, ensuring its legendary status.
Other versions of the legend feature an old lady or a simple herder who makes a pact with the Devil. In this version the devil agrees to build the bridge, and in return he will receive the first soul to cross it.
After building the bridge (often overnight) the devil is outwitted by his adversary, for example by throwing bread to lure a dog over the bridge first, and is last seen descending into the water, bringing peace to the community.