Upon crossing the river, I-95 comes into Clinton, Middlesex County continuing east through rural surroundings with some suburban elements. The freeway reaches an interchange with Route 81, close to the center of town adjacent to the Clinton Crossing Premium Outlets outlet mall, to the northwest of the interchange. From here, the road makes a reverse turn across the Menunketesuck River, after which it enters the town of Westbrook and reaches an interchange with Route 145. At this point, I-95 makes another reverse turn before turning east again, at the interchange with Route 153 that also provides access to the Westbrook Outlets outlet mall, just north of Westbrook Center. The freeway then reaches a pair of roadside stops, in which the northbound direction has a rest area and welcome center, and the southbound direction has access to Troop F of the Connecticut State Police, just before coming to the interchange for Route 166, where it enters the town of Old Saybrook. Within Old Saybrook, the road turns northeast, and has an interchange with Route 154 northwest of Old Saybrook Center. On the east side of town, US 1 merges onto northbound I-95 and joins the route in a concurrency, as it widens to six lanes, and comes to a trumpet interchange with the southern terminus of Route 9, which heads northwest from I-95/US 1 as a four-lane freeway parallel to the Connecticut River, towards Greater Hartford. A short distance later, the two routes cross the Raymond E. Baldwin Bridge, that has a fourth southbound lane, over the Connecticut River.