sentences:  The old bridge, built around the 15th century, is of two arches and built of brick.It incorporates two strange arched niche-like structures that have been variously interpreted as shelters for travellers caught in the rain and as lurking-places for excise-men.Percy Millican, in his history of Horstead and Stanninghall, links these with a similar arch not far from the bridge there, which is of similar date.