Treverbyn Bridge

Three-span bridge, dating from the early medieval period and substantially rebuilt in around 1412. Widened in the C18; closed to motor traffic in 1929.

MATERIALS: slatestone and granite rubble, with some granite boulders and slabs. Slate string course. Dressed granite parapet copings.

DESCRIPTION: Treverbyn Bridge spans the River Fowey east-west with three arches, about 22m long and 2.5m wide. It is constructed mainly of slatestone rubble with some granite boulders, with granite slabs at the western arch. At the eastern end are two four-centred arches with recessed arch rings, flanking a central pier with triangular cutwaters, continued into the parapet as refuges. A slate string course marks the parapet base on the downstream side. The earlier western arch has an inner rounded slatestone arch and is flat topped with a granite slab, with the parapet carried over at an angle on a second granite slab. The pier between the eastern and earlier western section of the bridge is wider with unequal cutwaters and no refuges on both up- and downstream sides. This is where the river also divides by the means of an island on the downstream side. The abutments and parapet are largely of local slatestone throughout, with granite in places from earlier re-used material. The parapets are about 50cm high, capped with iron-cramped dressed granite coping slabs. The parapet at the western end splays and curves to the downstream side, a result of widening in the C18.