Pennsylvania Statutes Title 16 P.S. Counties § 5713. Bridges on boundary between two counties

(a) Whenever any bridge contemplated by any of the provisions of this article  1 is on the boundary line between two counties or within one-fourth of a mile therefrom and necessary for the accommodation of the inhabitants of both counties, the commissioners of such counties shall act jointly in the exercise of all powers conferred upon them and in the performance of all duties imposed upon them.

(b) Whenever the appointment of viewers or inspectors is required, the court of each county shall appoint a full number of such viewers or inspectors and order a view in the manner and with like powers, duties and procedure provided for in the case of public roads. The total number thereof shall act together in the view or inspection and shall make their joint report and recommendations to each court. Exceptions to the report of viewers may be filed in and appeals therefrom made to the courts of either county, in which case the courts of said two counties sitting together shall hear and determine the same. Whenever publication of notice is required, such publications shall be made in each county. The approval of both boards of commissioners and of both courts shall be necessary in order to authorize any action requiring such approval.