Pont Cynon

The bridge is of high elliptical section, with a span of about 12 m; the interior of the arch is of brick but the facing each side is of slate. The slate facing returns considerably into the intrados. Voussoirs with roughly pecked finish, integrated into the common stone coursing; tall keystone hanging from the string course at the parapet base. Prominent string course with chiselled margins at the base of the parapet and at the springing line of the arch. Very large stone below the latter string course. Many of the stones show quarry drill marks and lewis holes.