The Flushing/Main Street Station, originally constructed in 1928, is a nationally registered historic station, served by the IRT 7-line local train continuously, and the IRT 7-line express train during rush hour periods in the peak direction. Being a major transit and commercial center, the Main Street Station is an extremely congested, heavily trafficked location.

The objective of this Project was to alleviate passenger congestion and to improve circulation and operational capacity at the station. The circulation capacity improvements of this station were accomplished with the addition of eight (8) new stairwells: four (4) new street-to-mezzanine stairwells and four (4) new mezzanine-to-platform stairwells. Two (2) of the new street-to-mezzanine staircases are located at the northwestern and southwestern corners of Roosevelt Avenue and Main Street, and two (2) new street-to-mezzanine stairwells were constructed at the westernmost part of the mezzanine to Roosevelt Avenue, toward Prince Street. The addition of the two (2) new street-to-mezzanine staircases at the northwestern and southwestern corners of the intersection increase circulation by adding a second, equivalent single staircase before feeding pedestrians into the double staircase. To accommodate the new street-to-mezzanine stairwells on Roosevelt Avenue, mezzanine extensions were constructed with new fare array control areas. These additional access points allow for improved flow of pedestrians into and out of the subway station and mitigate congestion at both street and platform levels. In addition, four (4) existing mezzanine-to-platform stairwells were replaced with new stairs, two (2) of which are oriented 180-degrees from their existing stairs, and the other two (2) which are oriented in the same direction as the ones that they are replacing to better navigate commuters and increase circulation. This project also included various state-of-good-repair improvements.