Idaho Code § 62-304
Whenever a complaint is made to the public utilities commission by the Idaho transportation department, or by a railroad company or companies, or upon motion by the Idaho public utilities commission, or local authorities in their respective jurisdictions with respect to the elimination or alteration of a crossing of a highway with one or more railroads the said commission shall and is hereby authorized and empowered to hear and determine such complaint in accordance with the provisions of chapters 1 to 7, inclusive, title 61, Idaho Code, taking into consideration the necessity for such elimination or alteration and the cost thereof, the location of any crossing and the manner in which it shall be constructed or reconstructed and maintained, or whether a crossing is to be eliminated and the provisions therefor, and shall make such order in relation thereto as shall be equitable, and shall determine what portion of the cost shall be paid by any party to the controversy: provided, that no cost shall be charged to the Idaho public utilities commission, and that no portion of the cost of eliminating or altering a crossing not on a state highway shall be ordered to be paid out of the state highway fund.
Idaho Code § 62-304