Upon crossing the Mystic River, the road enters the town of Stonington, where it comes to an interchange with Route 27 within the village of Mystic, that provides access to Mystic Seaport as well as the Olde Mistick Village shopping mall and the Mystic Aquarium located at the southeastern corner of the interchange. At this point, I-95 reduces to four lanes, and turns northeast past wooded areas with some residences, and comes to an interchange for Route 234 north of the center of Stonington, with a park and ride lot being located in the northwest corner of the interchange. From here, the freeway continues northeast to an interchange for Route 2/Route 49, providing access to the village of Pawcatuck to the south and a park and ride lot to the north in the middle of the interchange. Also, within the interchange, the southbound direction has a rest area and welcome center and the road comes into the town of North Stonington. I-95 continues to its last exit in Connecticut, the interchange with Route 216 and the eastern terminus of Route 184, as the median narrows. Immediately after this interchange, the freeway leaves Connecticut and continues as a four-lane freeway northeast into Rhode Island towards Providence.