This reclassification resulted in services which ran through the BMT Nassau Street Line to Downtown Brooklyn having two south ends.

This section, which was called the "Broadway Spur", has a short, but easily seen remnant (about one-half of a block in length, no tracks, just maintenance buildings) west and south of where the line curves toward the Williamsburg Bridge.

East of Broadway Junction, a third middle trackway exists and elevates over the other two tracks, ending just west of the Alabama Avenue station.

The curves are at nearly 90-degree angles, forcing trains to drastically reduce speed to 15 miles per hour in order to traverse them.

[14] On May 30, 1903, a connection between the Broadway Elevated and trolley tracks was completed south of the Cypress Hills terminal.

[15] A connection to the Williamsburg Bridge was established in 1908, rendering the two westernmost stations on the Broadway Ferry Branch obsolete.

This allowed BRT trains to access the Rockaways and Manhattan Beach, while affording the LIRR a connection into Manhattan to the BRT terminal located at Park Row over the Brooklyn Bridge (this service predated the opening of the East River Tunnels to Penn Station).

[17]: 59  In Fiscal Year 1930, the platforms at Kosciuszko Street were lengthened to accommodate an eight-car train of Standard subway cars.

[21] The two other stations west of that point (Metropolitan Avenue and Queens Boulevard) were closed in 1985, with the line there being demolished in 1990.

[22] In 1986, the New York City Transit Authority launched a study to determine whether to close 79 stations on 11 routes, including the segment of the Jamaica Line east of Crescent Street, due to low ridership and high repair costs.

[23][24] Numerous figures, including New York City Council member Carol Greitzer, criticized the plans.

[26] In 1958, the New York City Transit Authority first proposed the installation of a third track on the Jamaica El to provide peak-direction express service.

A 50- to 75-foot-wide right-of-way would have been needed, and since the line would have cut diagonally across several streets, 75 homes were slated to be torn down.

As part of the 1959 capital budget of the Transit Authority, $25.25 million was allocated for the construction of a third track on the Jamaica Elevated from 160th Street to Alabama Avenue.

[28] On October 9, 1958, because of a lack of funds and because of community opposition, the City Planning Commission removed the project from the capital outlay budget.

The installation of the third track would have attracted passengers from the overcrowded IND Queens Boulevard Line, as there would be significant time savings between 168th Street and Marcy Avenue.

Gray, saying that the project was "an unnecessary and unwarranted renovation of an antiquated elevated structure in which the transportation needs of our community are sacrificed for the convenience of the many Nassau residents who board the line at its Jamaica terminus."

The project was thought as becoming worthless in a few years, as Jamaica was planned to become a big shopping center, and therefore, the el would have had to come down.