Located at 77th Street and Fourth Avenue in Bay Ridge, Brooklyn, it is served by the R train at all times.

The 77th Street station was constructed as part of the Fourth Avenue Line, which was approved in 1905 and subsequently modified.

[9][10] Progress on the extensions did not occur until February 16, 1925, when the New York City Board of Transportation (NYCBOT) commissioned its engineers to examine platform-lengthening plans for this and eleven other stations along the Fourth Avenue Line.

[15][16] In the 1960s, the New York City Transit Authority (NYCTA) started a project to lengthen station platforms on its lines in Southern Brooklyn to 615 feet (187 m) to accommodate 10-car trains.

[17] On July 14, 1967, the NYCTA awarded a contract to conduct test borings at eleven stations on the Fourth Avenue Line, including 77th Street, to the W. M. Walsh Corporation for $6,585 (equivalent to $60,172 in 2023) in preparation of the construction of platform extensions (equivalent to $60,172 in 2023).

The latter change, which was also made to 15 other stations on the BMT Broadway and Fourth Avenue Line, was criticized for being dehumanizing.

The NYCTA spokesman stated that the old tiles were in poor condition and that the change was made to improve the appearance of stations and provide uniformity.

The station is designed to allow the northbound platform to become the Manhattan-bound express trackway if the two additional tracks were built.

[30][33][34] Outside fare control, there is a token booth and two staircases going up to either northern corners of 77th Street and Fourth Avenue.

[37][38] Inside the mezzanine, there are mosaics indicating a newsstand and two restrooms, all of which are now closed, and directing to each platform.

[40] A single platform-level exit-only turnstiles leads to a double flight staircase that goes up to the northwest corner of 76th Street and Fourth Avenue.