Stone Bridge 15mmThe road bed is 3inches in width. Because of its size, this bridge is ideal for 15mm gaming as well as 28mm gaming and will accommodate vehicles and infantry of either scale. The arch (water course under structure) will accommodate a river 4.25 inches in width. Stone bridges are timeless and can be found on battlefields throughout history. The picture above has a 15mm German Panther tank, for scale purposes.