Bridge, off Ballygowan Road (near Ballywilliam House), Comber, Co. Down, BT23 5PG

This is a small, hump-backed bridge, likely dating from before 1834, that carries the former main entrance drive to Ballywilliam House over a former mill race. It is situated to the east of the Ballygowan Road, approximately a mile southeast of Comber in County Down.

The bridge is constructed of random rubble and features two semicircular arches and a central cutwater. The parapets rise to a point on both sides and are capped with concrete. Vegetation covers parts of both faces of the bridge. The drive across the bridge is presently rough and muddy. A structural notice is present, indicating that the bridge does not appear to be entirely sound. To the west of the bridge are two gate pillars, retaining the remains of simple wrought iron gates.

A bridge is depicted on Ordnance Survey maps from 1834 and 1858, corresponding with the present structure. It served the entrance drive to Farm Hill, which later became Ballywilliam House, crossing a mill race that powered a flax mill to the south. The flax mill was owned by the Boyd family, who occupied Farm Hill from at least 1781. While the bridge’s construction may be late 18th century, its presence is confirmed by the 1834 valuation records. The bridge possesses both industrial archaeological and local historical interest.