Pont y Twr (partly in Bethesda community)

Pont y Twr is a three-arched bridge made of rubble stone, which was widened in the early 19th century. The original northern side features low rough stone voussoir arches and a rubble parapet. The northwest end has been splayed, likely in the early 19th century, creating an overhang on the right half of the center arch and refacing on the right arch. The added southern side, constructed earlier in the 19th century, includes three shallow elliptical arches with cut slate voussoirs and raised arch rings. There is a string course above the arches, with low cutwaters and raised piers situated between them, and the string course is broken forward over the piers. The bridge is topped with a rubble parapet that has edge-on stone coping.