Section 28-7212 - Disposition; joint actionA. The part of a county roadway that is the boundary line between two counties shall not be disposed of except by joint action of the boards of supervisors of both counties.B. The part of a state or county roadway that is a boundary line of an incorporated city or town or that is a state or county highway within an incorporated city or town shall not be disposed of except by joint action of the governing bodies of the city or town and the county or this state. Notwithstanding this subsection but subject to the obligations of the contract, a county board of supervisors or this state may abandon a county or state highway within an incorporated city or town by resolution.