Llanrhaeadr-ym-Mochnant Bridge

A single-arch stone bridge with stone parapets. The arch is of segmental form, spanning about 12 m, with sandstone voussoirs reducing in depth from the springing to the apex, approximately 800 to 600 mm deep. Above this the bridge is of local slate, and there is a corbel course on the extrados of the arch and at the base of the parapet each side. Roughly coursed common masonry, of smaller size in the parapets. The parapets are about 1 m high and turn out at each of the four corners. There is a flat rockfaced coping.

Carriageway about 6 m wide with side pavements.