Dartrey House

Single-arch bridge, built c.1840, to carry road over narrow channel between Lough Dromore and Inner Lough. Cast-iron arch and spandrels, composed of four aligned sections, supported by splayed stone abutments. Cast-iron shouldered rectangular panels to line of arch and to base of carriageway, with decorative lattice between. Wrought-iron railings with some recent mild steel replacements forming parapet to centre section of bridge. Cut-stone abutments, having squared coursed stone to impost level, and ashlar stone walls above. Cut-stone string course to top. Square-plan cut and carved stone piers, with pointed caps and pointed fluted panels to faces. Cut-stone parapet walls to abutments, some parapet walls missing. Set in former Dawson Grove demesne.

Erected to provide access to Black Island and the mausoleum to Lady Anne Dawson, this bridge, known as "Island Bridge", forms an appropriately elegant approach. Although missing some fabric due to past vandalism, the careful design and construction of this bridge remain evident. It shows the skill of nineteenth-century stonemasons and blacksmiths, with well cut and carved stone abutments and simple wrought-iron handrails. The decorative cast-iron panels to the arch give an indication of the formality of the original design. The cast-iron arches are riveted on the inside creating a smooth exterior appearance. The bridge is splayed slightly towards the outside edges, necessitating careful jointing of the stone.