At such time as all the Delaware Memorial Bridge Revenue Bonds issued pursuant to § 318 of this title have been paid in full or provision has been made for payment thereof as provided in the indenture securing said bonds, the Authority, as agent, shall continue to hold, control, operate, maintain and improve the said Bridge as a crossing, transportation facility or project in accordance with the Compact entered into between the 2 states, establishing the said Authority, and the Authority as such agent shall deal with the Bridge, its tolls and revenues as it is authorized, empowered and obligated to do by said Compact with respect to crossings, transportation facilities and projects as therein defined.