Montana Title 7. Local Government § 7-14-2130. Control of the movement of livestock on or near county roads

(1) Cattle guards, appurtenances, and gates may be constructed and maintained adjacent to county roads.

(2) Where a county road connects with a state or federal highway which is fenced on both sides, the board of county commissioners may construct and maintain extensions of the fence across the right-of-way of the intersecting county road. The board shall construct a pass which will permit passage of vehicles but will prevent loose livestock from passing onto the state or federal highway. In the extensions of the fence, there shall be maintained a gate to permit the passage of livestock and vehicles.

(3) Each board may construct on county roads passes which shall permit the travel of vehicles but which shall prevent the passage of loose livestock. Where necessary, gates shall be maintained to permit the passage of livestock. Such passes may be removed when, in the judgment of the board, the need therefor no longer exists.