Church Avenue station (BMT Brighton Line)

The Church Avenue station is an express station on the BMT Brighton Line of the New York City Subway, located at Church Avenue near East 18th Street in the Flatbush neighborhood of Brooklyn. The station is served by the Q train at all times and by the B train on weekdays only. , the southbound platform will temporarily be closed from August 5, 2024 until early October 2024 for accessibility upgrades.

Early history
The original station at this location was a two-track side platform station that ran south from Church Avenue, whereas the current station runs to the north. At a point about 150 feet south of Church Avenue, a clear difference in the form of the concrete retaining wall is visible on both sides of the right-of-way. This marks the point where the original Brighton Beach Line transitioned from an open-cut line depressed below ground level to a surface railroad for the remainder of the run to Coney Island. The line south of this point was converted from a two-track surface line to a four-track grade-separated line in 1907, and the portion north of this point was rebuilt from a two-track open cut to a four-track open cut in 1919.

After August 1, 1920, through service was shifted from the current BMT Franklin Avenue Line to a new subway alignment under Flatbush Avenue, which permitted direct access to Manhattan via the Manhattan Bridge and the Montague Street Tunnel.

Renovations
During the 1964–1965 fiscal year, the platforms at Church Avenue, along with those at six other stations on the Brighton Line, were lengthened to 615 feet to accommodate a ten-car train of 60 foot-long IND cars, or a nine-car train of 67 foot-long BMT cars.

In 1981, the Metropolitan Transportation Authority (MTA) listed the station among the 69 most deteriorated stations in the subway system. In 1982, the MTA began renovating the station.

In 2019, as part of an initiative to increase the accessibility of the New York City Subway system, the MTA announced that it would install elevators at the Church Avenue station as part of the MTA's 2020–2024 Capital Program. In November 2022, the MTA announced that it would award a $965 million contract for the installation of 21 elevators across eight stations, including Church Avenue. A joint venture of ASTM and Halmar International would construct the elevators under a public-private partnership. To accommodate the work, southbound trains were planned to bypass the station from August 2024 to an unspecified date in fall 2024, and northbound trains would bypass the station at the end of 2024.

Station layout
Church Avenue is an open-cut express station with short tunnels at each end to carry the line between cross streets. The station has four tracks and two island platforms. Each platform has two staircases, leading to a station-house at each end. The stops here at all times and is local, while the  stops here only on weekdays during the day and is express. The next stop to the north is Parkside Avenue for local trains and Prospect Park for express trains, while the next stop to the south is Beverley Road for local trains and Newkirk Plaza for express trains.

Exits
There are two exits and entrances to the station, both through station houses. The full-time end of the station is at Church Avenue, to the south. The original station-house was demolished and replaced with the current structure. Plain white tiles dot the interior and exterior of this entrance. There are restrooms inside fare control to the right side. The part-time entrance is at the north end of the station by Caton Avenue and St. Pauls Place, and the station-house there retains the original c.1918 exterior. This end of the station originally had a part-time booth during the morning rush; a high-exit turnstile was open at all other times.

After the 1980s renovation, the station was converted to booth operations from 7:00 AM to 10:00 PM every day. All of the platform columns were covered with steel supports during the renovation. At the midpoint, the southbound platform has an abandoned exit to East 18th Street between Church and Caton Avenues. The exterior of the station-house was made with brick and stucco, and was added in the early 1960s. The boarded-up staircase still stands.