55 Pa. Stat. § 321
In addition to their existing powers in respect to the public wharves, the municipalities of this Commonwealth shall have power to erect and maintain market-houses and terminal sheds or stations on said wharves, for the receipt and distribution of freight, express, and other matter hauled by boats, railroads, and street cars. Said power shall include the right to construct railroad and street-railway tracks or other facilities on said wharves to provide for the convenient handling of such freight or express matter, and the right to collect rents, tolls, or charges for the use of such market-houses, terminal stations, tracks, and other facilities. No permit other than a license revocable at will shall be granted for the use of such tracks, terminal stations, or other facilities, and no exclusive permit for the use of such tracks or facilities shall be granted.
55 P.S. § 321