It is classified as a class 3 togher, meaning a timber road or causeway laid across wet or marshy ground, a technique used in Ireland for thousands of years to allow movement through terrain that would otherwise be impassable. Unlike the more elaborate toghers built from split planks or carefully laid brushwood, a class 3 example represents a simpler, rougher construction, though no less purposeful for that.

The trackway at Annaghbeg was recorded during field survey work carried out in 1988 and published by Barry Raftery in 1990. Raftery was a leading authority on Irish bog roads, and his systematic cataloguing of these structures across Irish wetlands brought scholarly attention to a category of monument that had long been overlooked simply because so much of it lies hidden under peat. The orientation noted at Annaghbeg, running roughly WNW to ESE, would have connected points on either side of the boggy ground, most likely serving local agricultural or social movement rather than any long-distance route. Without more detailed excavation, the precise date of the togher remains uncertain, though comparable structures range in age from the Bronze Age through to the early medieval period.