The line was subsequently extended in 1906 to the street level right-of-way to Metropolitan Avenue,[7] and again in the 1910s during the Dual Contracts era onto the present elevated structure.

On July 29, 1914, the station was reconfigured to two island platforms to accommodate a new express track to Broadway – Myrtle Avenue.

From Montrose Avenue, it would curve east under McKibbin Street, private property, and Harrison Place.

[15] In September 1924, the BOT approved the remaining section of the route between Eldert Street and Broadway Junction in East New York.

East of Eldert Street, the route would turn south to a ground-level alignment parallel to the LIRR's Bay Ridge Branch, then run southeast in a tunnel underneath private property to the intersection of Eastern Parkway and Bushwick Avenue, where it would emerge onto a ramp leading to the existing Canarsie elevated.

[16] An ornamental viaduct over Bushwick Avenue and Eastern Parkway was removed from the original plans due to opposition from property owners.

[19][20][21] By 1946, the center track was removed, and the two platforms were joined by a wooden walkway near the station's two staircases, which was later replaced by a concrete connection.

[22][23] Beginning in 2004, the station underwent rehabilitation that included structural steel repairs and significant expansion.

[25] On April 19, 2007, the newly expanded main station building at the triangle of Myrtle, Gates and Wyckoff Avenues was formally opened.

Improvements to the complex included lighting upgrades, stairway reconfigurations, new interior finishes, and a new communication system.

A mosaic band is set at eye level, rather than high up on the wall, with brick red, yellow, tan and light blue offset by indigo and maroon.

Unlike other Canarsie Line island platform stations, there are no visible girders in the walls.

[3][4] The terminal features reconstructed roadway and sidewalks on Palmetto Street between Wyckoff and St. Nicholas Avenues.

Concrete bus pads are on the roadway along both sides of Palmetto Street for the length of the block.

Sidewalk canopies suspended from the elevated structure of the Myrtle Avenue Line on both sides of Palmetto Street provide shelter from inclement weather.

Other features include sidewalk benches and new lighting to improve the waiting environment for customers, new bus stop signage, bus holding lights linked to the Canarsie Line (which will be activated as part of a subsequent signal upgrade), and a new dispatcher's booth for NYC Transit employees.