The commission is hereby authorized to make and enforce such rules and regulations, and to establish, levy and collect (or to authorize, by contract, franchise, liens or otherwise, the establishment, levying and collection of) such tolls, rates, rents and other charges, in connection with any such bridge across the Delaware river which it may hereafter construct and operate, as it may deem necessary, proper, desirable and reasonable, which tolls, rates, rents, and other charges shall be at least sufficient to meet interest and sinking fund charges on bonds and obligations issued by the commission, the maintenance of such bridge, and the administrative expenses of the commission properly chargeable to such bridge. The commission is hereby authorized and empowered to pledge such tolls, rates, rents, and other revenues, or any part thereof, as security for the repayment, with interest, of any moneys borrowed by it or advanced to it for any of its authorized purposes, and as security for the satisfaction of any other obligation assumed by it in connection with such loans or advances.