Any portion or portions of the highways as herein described which are located on or forming part of any city street shall be taken over for construction, reconstruction and maintenance in accordance with the provisions of present or future laws relating to State highway routes in cities. Any portion or portions of the highways as herein described which are located on or forming a part of any borough street shall be taken over for construction, reconstruction and maintenance in accordance with the provisions of present or future laws relating to main State highways in boroughs.
36 P.S. § 1758-503