An Act amending the act of October 18, 1972 (P. L. 951, No. 232), entitled "An act amending the act of June 22, 1931 (P. L. 594, No. 203), entitled 'An act establishing certain township roads as State highways; authorizing their construction, maintenance, and improvement under certain conditions and restrictions; limiting the obligation of the Commonwealth in the construction of certain structures located on such highways; conferring certain powers upon the Department of Highways and local authorities, persons, associations and corporations for sharing the cost of the maintenance and construction of such highways; and making an appropriation to carry out the provisions of said act,' changing routes in Centre County," further providing for the effective date.