It has been designated as a scheduled monument and a Grade II* listed building.

[2] On either side of the road carriageway are parapets 0.6 metres (2 ft 0 in) high.

[1] It was built in the late medieval period with the first documentary evidence being from 1610.

[5][6] The grassy banks are grazed by sheep and provide an environment for Montbretia, Ivy-leaved Bellflower and Bottle Sedge, with the wetter areas supporting Bog-bean, Marsh Speedwell, Bog Asphodel and Round-leaved Sundew.

The river itself has populations of Watermilfoil and the hybrid between Monkeyflower and Blood-drop-emlets.