. The bridge is 30 ft long and 42 ft wide, with its elliptical arch reaching a height of 13 ft above the river. The facing of the bridge is rough-cut granite that has been fixed with mortar. In contrast, the granite stones that make up the arch have been very precisely worked. The bridge has parapet walls made of large granite slabs 4.5 ft , 2 ft wide, and 1 ft thick.