The plank bridge consists of two ends and a central pillar made of matching blocks that support granite beams. None of the construction is visible, the "planks" are just placed side-by-side. This type of bridge does not appear on the 1831 land registry map. It can be dated to the end of the 19th century. "Offerings" were a fee in kind or working hours, which each owner owed to the commune according to his property. Property tax has replaced this fee since the 1950s. The maintenance of bridges, roads or common lanes was ensured by this means.