Wilderness shall conform to the boundary of the Sweetwater Canyon Wilderness Study Area. (II) Western boundary The western boundary of the Lower Wilderness shall be 100 feet from the eastern edge of the north-south road bisecting the Upper Wilderness and the Lower Wilderness, known as Strawberry Creek Road . (III) Northern boundary The northern boundary of the Lower Wilderness shall begin where the bisecting road referred to in subclause (II) enters the Sweetwater Canyon Wilderness Study Area at the border of T. 29 N., R. 98 W., sec. 36, and T. 28 N., R. 98 W., sec. 2, and shall run east along the boundary of T. 29 N., R. 97 W., sec. 31, to the centerline of T. 29 N., R. 97 W., sec. 31, then north along that centerline to the midpoint of T. 29 N., R. 97 W., sec. 31, then east along that centerline to the boundary of T. 29 N., R. 97 W., sec. 32, then following the existing boundary of the Sweetwater Canyon Wilderness Study Area to the midpoint of T. 29 N., R. 97 W., sec. 32, then east along the centerline of T. 29 N., R. 97 W., secs. 32 and 33, to the existing boundary of the Sweetwater Canyon Wilderness Study Area. (ii) Exclusion of existing roads Any established legal route with authorized motorized use in existence on the date of enactment of this Act that enters the Upper Wilderness in T. 29 N., R. 98 W., sec. 4, or the Lower Wilderness in T. 29 N., R. 97 W., sec. 33, is not included in the Lower Wilderness. (2) Management (A) Administration Subject to valid existing rights, the Upper Wilderness and the Lower Wilderness shall be administered by the Director in accordance with— (i) this paragraph