The structure spans the Dalgan River, and depending on which arch you happen to be standing over, you are either in County Mayo or County Galway, the Galway portion falling within Kinnakinelly townland. Nine arches carry a narrow hump-backed road over the water, and the bridge manages to face in two architectural directions at once: the western, downstream side presents round arches, while the eastern side is pointed. That combination in a single early eighteenth-century rural bridge is worth pausing over.

Built around 1725, the bridge is constructed from coursed rubble limestone, the local material shaped into tall arches with thin, roughly cut voussoirs, the wedge-shaped stones that lock an arch together and transfer its load outward to the piers. The upstream face is fitted with cutwaters, the pointed or angled projections built into the piers to split the river current and reduce pressure on the structure. Those cutwaters have since been capped with concrete or rendered finishes, and a pipe has been threaded through them at some point, which gives the upstream elevation a slightly improvised look. The northern four arches have been further reinforced with metal tie rods and plates, and the whole bridge has received new pointing and cement copings in a relatively recent renovation, the kind of practical intervention that keeps old crossings usable but leaves them looking a little patched together alongside their original stonework.