It is a togher, a term for a wooden trackway laid across boggy or marshy terrain, and this particular example is classified as class 3, meaning it belongs to a tradition of relatively modest construction, likely formed from brushwood, round wood, or loosely arranged timber rather than the more elaborate planked or pegged designs found at higher-profile sites.

The Derryglogher togher was noted during field survey work carried out in 1988, with its orientation recorded by B. Raftery, one of Ireland's foremost authorities on bog roads and prehistoric trackways. Tогhers of this kind were typically built to allow people and animals to move across ground that would otherwise have been impassable, and many examples across the Irish midlands date from the Bronze Age or Iron Age, though precise dating requires specialist analysis of the timbers themselves. The boglands of County Longford sit within a broader landscape of wetland archaeology, where anaerobic conditions have preserved organic material, including wood, for thousands of years, making sites like this one far more legible to archaeologists than they would be in drier ground.