53 Pa. Stat. § 24351
The General Assembly hereby finds as a fact that (a) the Commonwealth has laid out certain streets, lanes and alleys which are presently or may hereafter become situate within the corporate limits of cities of the second class, (b) that by virtue of sundry acts of Assembly providing for the erection of boroughs, the incorporation of cities and the annexation by cities, cities of the second class have acquired the interests of the Commonwealth in such streets, lanes and alleys which are not being maintained by the Commonwealth, and (c) that doubts have arisen as to whether or not the Commonwealth has divested itself of all its right, title and interest in and to such streets, lanes and alleys, including its reversionary interests therein. It is therefore declared to be the policy of the Commonwealth to promote the interests of the Commonwealth, cities of the second class and the public by ratifying and confirming all of the right, title and interest of the Commonwealth in and to such streets, lanes and alleys which are not being maintained by the Commonwealth as being vested absolutely in cities of the second class.
53 P.S. § 24351