These structures are among the more quietly remarkable survivals in the Irish archaeological record, preserved for centuries, sometimes millennia, by the very waterlogged conditions that made them necessary in the first place. This particular example is classified as a class 1 togher, the most substantial category, typically constructed from split or roundwood planks arranged in a deliberate, engineered fashion rather than the rougher bundled material of lower-class examples.

Toghers as a building tradition stretch back into prehistory in Ireland, with some of the most celebrated examples, such as those found in the midland bogs, dating to the Bronze Age or earlier. They represent a practical response to a landscape that was, for much of the year, effectively impassable on foot without assistance. The act of felling timber, shaping it, and laying it in sequence across a bog required communal effort and planning, which means these structures often indicate something about the social organisation of the communities that built them, as well as the routes and destinations that mattered to those people. A class 1 designation suggests this togher at Eglish was a serious piece of infrastructure rather than a temporary or improvised crossing.