§ 6-608 When village may relinquish care of bridges. Any village which has the supervision, control, care and maintenance of any bridge or bridges wholly within its boundaries, or which has entered into an agreement with a town as provided in sections 6-604 and 6-606 of this chapter, may with the consent of the town board of the town within which any such bridge is situated, by resolution of the board of trustees subject to a permissive referendum as defined in this chapter, terminate the right of such village to supervise, control, care for and maintain such bridge or bridges, or cancel any such agreements made by it with such superintendants of highways, and thereafter every public bridge within the boundaries of said village shall be under the supervision, control, care of and maintenance of the superintendants of highways of the town as provided in section 6-602 of this chapter. Such action, however, shall in no way cancel or interfere with the validity of any obligation or indebtedness of the village incurred during the period that the village exercised the supervision, control, care and maintenance of such bridge or bridges, or during the period that said agreement was operative.