This bi-level station has six tracks and four side platforms in total. The upper level is located on the Eighth Avenue Line and is fed by Eighth Avenue local trains from Central Park West and has four tracks and two side platforms. The center express tracks carry Eighth Avenue express trains during the day, and do not have any platforms. Fare control is at platform level. The lower level is on the Queens Boulevard Line has two tracks and two side platforms, separated by a curtain wall for the majority of the station. At the northern end of the station, the curtain wall is not present and the two side platforms are in full view of each other. The northbound track of the lower level is fed by the northbound local and express tracks at 42nd Street. In the southbound direction, lower level trains may access either the Eighth Avenue local or express tracks; until 2003, they also had the option of running to the abandoned lower level of 42nd Street. The two levels are offset, with the upper level running from 50th to 52nd Streets and the lower from 49th to 51st Streets. Neither level has crossover or crossunder between directions, although level-to-level transfer in the same direction is possible. An untitled etched-granite piece of artwork by Matt Mulligan was installed on the downtown upper-level platform in 1989 and features neighborhood life. The station is being renovated as part of the 2010–2014 MTA Capital Program. As of an MTA study conducted in 2015, at least 37% of components were out of date.
Exits
The southbound side of 50th Street has an expanded mezzanine area, with exits to West 49th and West 50th Streets; it also has two ADA-accessible elevators. A ramp leads from the mezzanine to the downtown upper-level platform, which is only a few steps down. This mezzanine was reconstructed during the construction of the Worldwide Plaza Complex. The downtown side has an escalator to the lower level and exits into a building façade at the northwest corner of Eighth Avenue and 49th Street. There are also two street stairs to the southwest corner of that intersection, as well as one street stair to either western corner of Eighth Avenue and 50th Street.
In contrast to the downtown platforms, the uptown platforms lack elevators and are not ADA-accessible. Renovation, including addition of an elevator on the uptown side of the station, was planned for the 2005–2009 MTA Capital Program and was to reopen many closed stairways to the lower level; however, these actions not funded. There is one street stair from this platform to either eastern corner of Eighth Avenue and 50th Street; the southeast stair is located inside a building. An additional stair is located at the northeast corner of Eighth Avenue and 51st Street. There are several closed exits from the station to the street, primarily at the north end of the station. These include stairs from all four corners of Eighth Avenue and 52nd Streets. A closed exit goes from the downtown platforms to the southwest corner of 51st Street and Eighth Avenue; this mirrors the exit to the same street from the uptown platforms. An additional closed exit from the uptown platforms is located at the southeast corner of 49th Street and Eighth Avenue; this mirrors the exit to the same street from the downtown platforms.
