 Past this interchange, the freeway enters the town of East Haven, where US 1 parallels the highway on the both sides as a frontage road as the southbound direction narrows back to three lanes, before coming to a partial interchange with that route.Within the interchange, it also crosses the Northeast Corridor.A short distance later, there is a southbound exit and northbound entrance with Route 100 before the road curves east across Saltonstall Mountain and Lake Saltonstall, and comes into the town of Branford.