That threshold quality, a bridge positioned exactly where a lake becomes a river, gives the structure an unusual character. It is not simply crossing a watercourse; it is marking a transition.

The bridge is built from random ashlar sandstone, meaning the stones are cut and dressed but laid without strict coursing, giving the surface a solid but uneven texture. Its single segmental arch, shallower and less dramatic than a full semicircle, is framed by rusticated voussoirs, the wedge-shaped keystones cut with a deliberately roughened face, a decorative choice that adds depth and shadow to the arch. A string course, a narrow projecting horizontal band of stone, runs across the face of each abutment at the height where the arch springs from its supports, visually tying the structure together. The base of each parapet overhangs the body of the bridge slightly, and vertical stone coping runs along the tops of both parapets. On either side of the bridge itself, stone causeways with a basal batter, meaning the stonework angles outward slightly at the base for stability, extend the crossing into the surrounding ground.