These structures are among the more quietly remarkable survivals in the Irish archaeological record, built by communities who needed to move across waterlogged terrain long before any notion of a modern road existed. The one at Carta is classified as a class 1 togher, a designation that relates to its construction method, typically involving split or hewn planks laid transversely across longitudinal runners, representing a relatively sophisticated approach to the problem of crossing boggy ground.

Toghers as a category span a considerable range of Irish prehistory and early history, with some examples dating back thousands of years. Bogs have preserved them in extraordinary condition precisely because of the anaerobic, acidic environment that would otherwise seem hostile; the same waterlogged conditions that made such roads necessary in the first place also arrested the decay of the timber used to build them. The Carta togher sits within a landscape in east Galway that has long been shaped by the interplay between settlement and wet ground, and its presence points to routes of movement and social connection that are otherwise invisible on the surface today.