Central section of the Oued Bellah bridge, lower tier. Notice how the vertical edge stones aside the arches have fallen off, destabilizing the bridge. This two-tier bridge, directly on the main road, was originally 288 m long and 26 m high, longer than the Pont du Gard! The bridge is now a sorry sight. The ruins are remains of the first tier, with stumps of the pillars of the second tier rather inelegantly sticking out.