Carrownagower Bridge

Single-arch road bridge over canal, extant 1859. Part creeper- or ivy-covered tuck pointed snecked rock faced limestone walls between drag edged rock faced limestone ashlar battered piers with drag edged rock faced cut-limestone chamfered stringcourses supporting benchmark-inscribed drag edged tooled limestone ashlar parapets. Single segmental arch with drag edged rock faced limestone ashlar voussoirs. Sited spanning Cong Canal with unkempt banks to canal.

A bridge representing an important component of the mid nineteenth-century civil engineering heritage of south County Mayo with the architectural value of the composition, one 'erected by the County of Mayo' as the successor to an earlier bridge marked on the first edition of the Ordnance Survey (surveyed 1838; published 1840), confirmed not only by the rock faced dressings demonstrating good quality workmanship, but also by the elegant "sweep" of the arch making a pleasing visual statement at a crossing over the ill-fated Cong Canal: meanwhile, a discreet benchmark remains of additional interest for the connections with cartography and the preparation of maps by the Ordnance Survey (established 1824).