The roughness of those voussoirs is worth noting: finely dressed stonework was expensive and time-consuming, and bridges built for practical rural use often bear the marks of local craft rather than civic ambition.

The Glashaboy is a river of east Cork, and a bridge at this crossing would have served the movement of people, livestock, and goods across a landscape that was, for most of its history, far more dependent on such infrastructure than is easy to appreciate today. Segmental arches, which describe a curve that is shallower than a full semicircle, were a common engineering choice for bridge builders working in Ireland from the medieval period onwards, allowing for a flatter roadway and a structure that could handle the variable flow of a river prone to seasonal flooding. The two-arch arrangement here suggests a pier standing in the riverbed, dividing the span and distributing the load, a practical solution that also speaks to the width and character of the Glashaboy at this point.