Idaho Code § 40-2303
No right shall be deemed to have vested in the public for highway or other purposes, where free use may be granted to the public to a right-of-way for the purposes of travel, over and upon any dam or bridge constructed over and across any of the streams of this state, and owned by any person.
[40-2303, added 1985, ch. 253, sec. 2, p. 694.]