The county court of any county in the State of West Virginia, through which the Shenandoah River runs, may establish on and across said river not more than three free ferries; and such ferries shall be provided with sufficient landings and boats, and such attendants for the boats, as may be necessary to accommodate public travel. The court shall pay all expenses of establishing such ferries, and of providing and maintaining the necessary boats and attendants therefor, out of the county treasury.