Known as a togher, this is a type of timber trackway laid across waterlogged or marshy ground, a practical solution to the very particular problem of moving through Ireland's midland bogs. The example at Annaghbeg is classified as a class 3 togher, a designation that reflects its construction method and scale within a broader typology of these wetland roads.

The site was recorded during a field survey in 1988 and runs on an east to west orientation, a detail that hints at the kind of purposeful, directed movement it was built to serve, connecting points on either side of the wet ground rather than wandering through it. The record draws on the work of Barry Raftery, whose 1990 publication on Irish trackways and wetland archaeology brought systematic attention to this category of monument. Toghers were constructed across many centuries in Ireland, from the Bronze Age through to the early medieval period and beyond, and the boggy conditions that made them necessary in the first place are often the very reason they survive, preserved in the anaerobic, waterlogged environment that prevents timber from decaying in the ordinary way.