Polyphant Bridge

Polyphant Bridge is a road bridge over the River Inny, likely built in the 17th century, with the west span rebuilt in 1847. It is constructed of slate rubble, featuring dressed slate arch rings and granite coping. The bridge has two spans, with a carriageway approximately 3.7 metres wide. The original 17th-century span has a round arch with a recessed dressed slate rubble arch ring, a small granite keystone, and chamfered imposts. The 1847 rebuilt west arch also has a dressed slate round arch ring. The central pier includes triangular cutwaters on both sides. The parapet has rounded granite coping, which is reduced in height over the long causeway abutments and replaced by granite posts and steel tube rails.

The west arch was rebuilt following a flood on 8th July 1847, which destroyed all other bridges on the River Inny, except for Trekelland Bridge in South Petherwin. Polyphant Bridge used to carry the main road from Launceston to Bodmin until a detour was established via 'Two Bridges' in the early 19th century. The River Inny is a tributary of the Tamar.