If opposition be made thereto, such application shall be heard by the appropriate board of county commissioners or highway district commissioners at a time fixed by said board, at which time, if the objector shall consent to said vacation, or if the petitioner shall produce to the board of county commissioners the petition of two-thirds (2/3) of the property holders of lawful age in said town, or owning two-thirds (2/3) of the tracts in such platted and subdivided acreage, the said board of county commissioners may proceed to hear and determine upon said application, and may if in their opinion justice requires it, grant the prayer of the petitioner, in whole or in part.
Idaho Code § 50-1319