The Clachan Bridge is a simple, single-arched, hump-backed, masonry bridge spanning the Clachan Sound, 13 kilometres (8.1 mi) southwest of Oban in Argyll, Scotland. It links the west coast of the Scottish mainland to the island of Seil. Because the Clachan Sound connects at both ends to the Atlantic Ocean, and might therefore be considered part of that ocean, the bridge came to be known as the Bridge over the Atlantic. Such an appellation has also been applied to certain other bridges having similar situations, such as the bridge between Norðskáli and Oyri in the Faroe Islands.