R.I. Gen. Laws § 45-59-27
Notice of the creation of a management district and a district management authority will be given by publication in a newspaper of general circulation within the municipality at some time subsequent to the approval of the petition by the city or town council as provided in § 45-59-7. Actions to contest the validity of the proceedings for the creation of the management district and the district management authority must be commenced within sixty (60) days after the date of the notice and no action thereafter commenced will raise any question concerning the validity of the proceedings and the creation of the management district and the district management authority. After the expiration of the sixty (60) day period, the validity of the proceedings and the creation of the management district and the district management authority will be conclusively presumed.
R.I. Gen. Laws § 45-59-27