The secretary shall have power, with the approval of the Governor, to change any plan establishing the ultimate width and lines of any State highway by reducing the width of such State highway or section thereof, established as hereinbefore provided, by causing a new plan thereof to be made, showing the center line of said highway and the new established width thereof, and shall attach thereto his acknowledgment. When any such change has been made, such plan, and acknowledgment shall be recorded in the office of the recorder of deeds of the proper county, as hereinbefore provided, and a notation shall be made on the prior plan that the same has been replaced by a later plan.