Dandrymire Viaduct is located at Garsdale Head, where the watershed between the Rivers Clough and Ure forms a relatively low-level pass between the valleys of Garsdale and Wensleydale. It is 227 yards (207 metres) long and has twelve arches, which vary in diameter from 44 feet 3 inches to 45 feet. For strength and resilience, the structure is split into three 4-arch sections and the piers between each section (pier numbers 4 & 8) are significantly thicker than the intermediate piers.