R.I. Gen. Laws § 24-2-7: Proceedings and plats as evidence of highway.

The proceedings before the town council under §§ 24-2-1 — 24-2-6, insofar as the proceedings shall not have been set aside on appeal as provided in § 24-2-3, with the accompanying plat or duly certified copies thereof, shall forever thereafter be conclusive evidence upon the town and all parties notified, and their privies, as to the existence of the highway in width and length as platted, and prima facie evidence thereof as to all others.