Gallox Bridge, Dunster of Dunster, with two arches over the River Avill. It has a roadway width of , a total width of and is long. The side of the bridge each have four narrow chamfered ribs. The approach from the village is via a raised causeway. Gallox Bridge, Dunster The Gallox Bridge in Dunster, Somerset, England dates from the 15th century. It has been designated as a Grade I listed building and scheduled monument. The bridge is in the guardianship of English Heritage. The stone packhorse bridge crosses the River Avill at the southern end of the village, below Dunster Castle at
Dunster Castle during the early 12th century, probably forming a shell keep around the top of the motte. In the late 1130s England began to descend into a period of civil war known as the Anarchy, during which the supporters of King Stephen fought with those of the Empress Matilda for control of the kingdom. William de Mohun's eldest son, also called William, was a noted supporter of Matilda, and Dunster was considered one of her faction's strongest castles in the south-west. In 1138 forces loyal to Stephen besieged the castle; a siege castle was built nearby, but all trace of it