Crosses some a spillway just east of I-80 just before I-80 crosses from California to Nevada. North of Mystic in Sierra County.
Jan Claire sends observations about the structure the bridge crosses: "The dam is a diverter. Water from the Truckee river is diverted into a canal which runs over to Verdi, Nevada at which point it is pumped up and over a hill and down into another river. Because this dam does not appear on the California Department of Water Resources inventory, I assume it is a long-ago-grandfathered dam operated under treaty with the state of Nevada for irrigation purposes. Satellite photos show this diverter-canal runs through what may still be, or probably was, farmland west of Verdi."