After this interchange, the freeway enters the city of Stamford at the city's West Side. The road crosses the Rippowam River and enters the dense commercial area of Downtown Stamford, where it briefly becomes elevated and serves Route 137 near the Stamford Transportation Center. Upon leaving the downtown area, the freeway passes over the New Haven Line and crosses into the residential East Side of Stamford, where there is an interchange with US 1 that also provides access to Route 106. After this point, the southbound direction gains a fourth lane as the road enters the town of Darien, where there is a service plaza in the southbound direction. In the community of Noroton, the highway passes to the south of Noroton Heights station on the New Haven Line. Near the center of town, the southbound direction narrows to three lanes again, and I-95 has interchanges with US 1 and Route 136. Next, the freeway turns to the northeast, passing over the New Haven Line and coming to a service plaza and welcome center in the northbound direction, before reaching another interchange with US 1.