17 Del. C. § 313

So long as any bonds which may be issued in connection with the financing of the construction of the Bridge shall remain outstanding, no bridge or tunnel over or under the Delaware River for the use of the traveling public or for the transportation of goods or other property, having a terminus in this State within the distance of 10 miles north along the shore of the Delaware River and 20 miles south along such shore from the Delaware terminus of such Bridge constructed under this chapter, shall hereafter be constructed and operated by the State or by any county, municipal corporation or political subdivision of the State or by any agency or instrumentality of any thereof or by any public body or authority not created by an act of Congress of the United States or by any person, copartnership, association or corporation not created by or acting under the authority of an act of Congress of the United States.