Mott Haven Junction to Woodlawn

From crossovers at CP 5 (MP 5.2), where the four-track Harlem Line continues northeast and the three-track Hudson line swings north-northwest, along (but not yet on) the north side of the Harlem River, the Harlem Line runs in a stone cutting and passes a Maintenance of Way yard with at least four tracks on the west side, and the west apex of the wye with the Harlem Line at Mott Haven (MP 5.4), where the speed limit rises to 60/20, and the Mott Haven Yard used to lie on the west side, a road bridge overhead, an angled through-girder road bridge overhead, a tunnel under city streets, Melrose Junction, where the line to Oak Point Yard splits off with a south-facing junction on the east-side and turns away southeast, a short open area, crossovers at CP 106 (MP 5.9), a shorter tunnel under city streets, leading right to the passenger station with two side platforms at Melrose (MP 6.1), and MP 6.2, where the passenger speed limit rises to 65.

There are two bridges over streets, a street alongside to the east, two road bridges overhead, two wide road bridges overhead, Morrisania, MP 6.6, where the speed limit rises 80/35, three road bridges overhead, a stone cutting, two road bridges overhead, a pedestrian bridge overhead, three road bridges overhead, the passenger station with two side platforms at Tremont (MP 7.9), a road bridge overhead, a stone cutting, three road bridges overhead, and MP 8.8, where the speed limit becomes 65/40.

After a tunnel under city streets to the south end of the station, there is a passenger station with two side platforms at Fordham (MP 8.9), a road bridge overhead, the passenger station at Botanical Garden (MP 9.5), a street alongside to the west, MP 10.0, where the passenger speed limit on the outer tracks rises to 80 mph, a road bridge overhead, a through-girder road bridge overhead, the passenger station at Williams Bridge (MP 10.5),with two side platforms and a road bridge overhead within the station, MP 11.5, where the passenger speed limit drops to 60 mph, a road alongside to the east, a road bridge overhead, crossovers at CP 112 (MP 11.8) for the upcoming junction, the passenger station with two side platforms at Woodlawn (MP 11.9), and the flyover junction, where the New Haven Line turns away just north of due east, from the outer tracks, and the four-track Harlem Line continues north-northeast, with freight speed limit 25 mph through the junction.