Like the other stations on the Congress Line (and the future Dan Ryan Line and O'Hare Line on the Kennedy Expressway) the station has a single island platform. When the station originally opened, its name was just "Halsted" like its predecessor.
The station shares a characteristic with other stations on the Congress Line, including future lines like the Dan Ryan and O'Hare Lines on the Kennedy Expressway, in having a single island platform. It originally opened as "Halsted," just like its predecessor.