Northeast Corridor
Readville station is located at the crossing of two rail lines: the north-south Northeast Corridor and the northeast-southwest Dorchester Branch (Midland Division). The three-track Northeast Corridor is at grade, with the single-track Dorchester Branch on an embankment. On the west side of the station, a single track runs from the Northeast Corridor up to the Dorchester Branch, which continues as the Franklin Branch. A single side platform is located on the north side of the Dorchester Branch east of its bridge over the Northeast Corridor. Two side platforms are located on the outside of the Northeast Corridor tracks, while the connector track has platforms on both sides. West of the connector track, two stub tracks that formerly ran to the Dedham Branch and Readville 5-Yard are used for Amtrak equipment storage.