The bridge at Ballyhurrow, known on old maps as Burncourt Old Bridge, is a single-span structure whose careful masonry marks it out as an 18th-century construction of some deliberateness. The cut and dressed voussoirs, the wedge-shaped stones that form the curved arch of a bridge, are finished with a projecting keystone, the central locking stone at the crown of the arch, a detail that speaks to a builder who was working with both structural confidence and a certain decorative intention.

The bridge appears by name on the first edition Ordnance Survey six-inch map of 1843, already carrying the word "old" in its label, which suggests it was well established by the time the surveyors came through. It appears again on the second edition of 1907, unchanged in position and name. That consistency across more than sixty years of mapping points to a structure that served its local purpose reliably and without drama. The bridge is recorded as single phase, meaning it was built in one campaign of construction rather than altered or extended over time, which is relatively uncommon for a rural crossing that might otherwise have been patched or widened as needs changed. There is no evidence of an earlier structure on the same site before 1700, so what stands here is what was built, likely sometime in the 1700s, and it has not been substantially reworked since.