At just over seven metres wide, it is broad enough to suggest it was built with some ambition, yet the construction method is essentially traditional: random-rubble limestone laid without the precision of cut ashlar, but dressed up at the key structural points with well-finished voussoirs, the wedge-shaped stones that line each arch and lock the whole thing together, and prominent keystones sitting visibly at each crown.

The bridge presents three wide segmental arches, each spanning roughly eight to nine metres, with low pointed cutwaters on both faces of the structure. Cutwaters are the tapered projections built into the piers to divide the river current and reduce the pressure on the bridge, and at Liscongill they are kept low and functional rather than decorative. A string course, a narrow horizontal band of masonry, runs above the arches, marking the transition to the parapet wall, which is finished along its top edge with D-shaped limestone coping stones. The overall character of the bridge points to construction in the mid-nineteenth century, a period when such infrastructure was being extended across rural Ireland, sometimes under public works schemes, sometimes through estate investment. The River Dalua, which the bridge crosses, flows through north Cork before joining the Blackwater, and this crossing would have served local traffic between townlands in that part of the county.