[7] The line was constructed using the cut-and-cover tunneling method, and to allow pedestrians to cross, temporary bridges were built over the trenches.

[11] The design called for a small mezzanine but 75th Avenue was built with a full one as it was cheaper than filling in the excavation.

[17] Construction was further delayed due to a strike in 1935, instigated by electricians opposing wages paid by the General Railway Signal Company.

[17] On December 31, 1936, the IND Queens Boulevard Line was extended by eight stops, and 3.5 miles (5.6 km), from its previous terminus at Roosevelt Avenue to Union Turnpike.

[24] With the subway providing a quick and cheap commute, Forest Hills became a more desirable place to live, and as a result new apartment buildings were built in advance of the line's opening to accommodate the expected influx of residents.

[25]: 74 [26]: 71  Forest Hills was transformed from a quiet residential community of one-family houses to an active population center.

[29] The owners of these six new apartment buildings, Cord Meyer Development Company, local homeowners, and civic associations placed pressure on the New York City Board of Transportation to open the entrance in July 1938.

[31] In 1953, the platforms at six Queens Boulevard Line stations, including 75th Avenue, were lengthened to allow eleven-car trains.

[a][33] The New York City Board of Transportation had announced plans in November 1949 to spend $325,000 extending platforms at several IND stations, including 75th Avenue, to accommodate 11-car trains;[34][35] the bid for the project went out in 1951.

[43] There are mosaic name tablets reading "75TH AVE." in white sans-serif font on a black background with a light Fern green border, and beneath them are directional tile signs in white lettering on a black background pointing to the exits.

[46][47] Emerald green I-beam columns run along both platforms at regular intervals, alternating ones having the standard black station name plate with white lettering.

The outer walls of this trough are composed of columns, spaced approximately every 5 feet (1.5 m) with concrete infill between them.

[51][52] However, it is set up in a way that does not allow a free transfer between directions, as the fare control is located in the middle of the mezzanine.

[61] There are a pair of diamond crossovers near the western end of this station, located between the local and express tracks in each direction.

[62] F trains use these at all times, switching from express to local for the remainder of their route east (railroad north) to its terminal at Jamaica–179th Street station.