Birks BridgeBirks Bridge is a traditional stone-built bridge over the River Duddon in the English Lake District, in Dunnerdale-with-Seathwaite, Cumbria, standing at Grid Reference.History and constructionThe bridge was built around the 18th century, with voussoirs and inbuilt drainage, and became a listed building in 1990.AspectBirks Bridge is a packhorse bridge of outstanding beauty, even for Lakeland. Hunter Davies described how "the hump-back stone bridge seems itself to be a work of nature, blending and melding so well with the rocks either side". Wainwright considered this a tribute to the artistry of craftsmen of former times.