As with other stations built as part of the original IRT, the tunnel is covered by a "U"-shaped trough that contains utility pipes and wires. The bottom of this trough contains a foundation of concrete no less than thick. Each platform consists of concrete slabs, beneath which are drainage basins. The original platforms contain circular, cast-iron Doric-style columns away from the platform edge, spaced every , while the platform extensions contain I-beam columns near the platform edge. Additional columns between the tracks, spaced every , support the jack-arched concrete station roofs. The ceiling height varies based on whether there are utilities in the ceiling. There is a gap between the trough wall and the platform walls, which are made of -thick brick covered over by a tiled finish.