Pont Dysynni (partly in Bryn Crug community)

The bridge is built of local stone rubble. Four semi-circular arches of 6.3m span, of squared voussoirs set back under a square profile regulating course, the arches rising 1.8m above the water. Flush spandrels and parapet, the latter being caped with stone flags. The water piers are set on starlings, with a c120-degree cutwater each side, from which pilasters buttresses, with one offset, rise to the coping. The roadway, which is 3.75m wide between the 0.43m parapets, is humped over the river spans, and the bridge has a slight 'S'-curve on plan. An iron plate by Isaac of Portmadoc is reset in the E parapet, banning locomotives from crossing due to the insufficient strength of the bridge.