Rhode Island State Route 165 is a short highway in Southwestern Rhode Island. It is completely within Washington County. This highway goes from the Rhode Island/Connecticut State Line as a continuation of Connecticut State Route 165, to Rhode Island State Route 3. RI St Rt 165 passes through the following town in Washington County. Exter RI St Rt 165 is not multi-plexed in Washington County. RI St Rt 165 intersects the following highway in Washington County. Rhode Island State Route 3, at Exter.