Brickhill Bridge, Agivey Road, Aghadowey, Coleraine, Co Londonderry, BT51

Brickhill Bridge is a triple-arched masonry road bridge constructed in 1855 to carry the Coleraine–Kilrea road over the Agivey River. It is built of squared basalt blocks laid randomly, with rusticated voussoirs, pilasters, string courses, sandstone parapet copings and brick soffits that give it considerable architectural merit.

The bridge comprises three equi-sized segmental arches with rusticated voussoirs and brick soffits. Curved pointed cutwaters at the upstream and downstream ends of both piers rise to arch spring level. Shallow pilasters rise from the piers and abutments to the top of the parapets. A dressed string course wraps around the quoins, runs through the arches at arch spring level, and continues around the tops of the cutwaters. A rusticated and margined string course runs along the base of the parapets. The parapets are coped with rounded sandstone blocks and terminate in out-projecting piers with sandstone caps. An inscribed stone on the middle of the road face of the upstream (west) parapet records: "Designed by/ Stewart Gordon Esq CE/ Executed by/ Edward Toy and Son/ Contractors Londonderry/ 1855". Modern steel plaques at the north-east and south-west mark the bridge's name and the river it crosses.

The bridge is of particular local historical interest on account of its attested designer, erector and date of construction. It was designed by Stewart Gordon, County Surveyor for Londonderry, and built by Edward Toy & Son. The structure represents a replacement bridge, evidently financed under the Grand Jury Presentment system. An uncaptioned bridge appears at this location on the 1831 Ordnance Survey six-inch map, and a "Brick Kiln Bridge" on the road to Kilrea is mentioned in the 1836 Ordnance Survey Memoir for Agivey, probably referring to the same earlier structure. The present bridge is explicitly captioned as Brickhill Bridge on the 1853 Ordnance Survey map, confirming its construction between these dates.

The bridge enjoys an unspoiled rural setting in open countryside surrounded by fields.