Spanning the Tourig river at a width of 6.7 metres, it is built on four semicircular arches and fitted with pointed breakwaters, the narrow wedge-shaped projections that deflect the current away from the piers and reduce the force of water pressing against the structure. It is the kind of quiet, functional engineering that rarely draws attention to itself, yet the combination of its form and its precise position, straddling a county line mid-river, gives it an oddly marginal character.