From the wye junction at Devon (MP 60.7), 60 mph passenger speed on the junction, where the Waterbury Branch turns away north, the main line continues east-northeast four tracks, dropping to three at MP 61.1, east apex of the wye, overhead electrification, with overall speed limit 75 mph for passenger trains and 40 mph for freight trains, past an angled road bridge overhead, three road bridges overhead, the passenger station with two side platforms and depot to the north at Milford (MP 63.3), where the passenger speed limit is 60 mph, four bridges over roads, and two road bridges overhead, turning northeast at crossovers at CP 266 (MP 66.3), where the passenger speed limit is 70 mph, past a bridge over a street, a road bridge overhead, five bridges over streets, a road bridge overhead, Woodrow, and a road bridge overhead,.
A freight line once trailed in from the west at West Haven, past a through girder bridge over a watercourse, two road bridges overhead, MP 71.8, where the speed limit falls to 15 mph for passenger trains and 10 mph for freight trains, a brick cutting, four road bridges overhead, the four-island platform passenger station with depot to the northwest at New Haven (MP 72.3), where passenger trains headed for the Springfield line switch from electric to diesel haulage (and those for Boston did until 2000), with both Amtrak and Metro-North shops on the southeast side of the line, MP 72.5, where the speed limit for passenger trains also falls to 10 mph, crossovers at Fair Street (MP 72.7), the passenger station with two island platforms at State Street, the Division Post (MP 72.8), where Metro-North ownership ends and Amtrak ownership starts, two road bridges overhead, a pedestrian bridge overhead, four road bridges overhead, and the junction at Mill River (MP 73.6), where the double track, CTC, Springfield line continues northeast and the double track, CTC, overhead electrified Boston line turns sharply south.