4. BMT Lexington Avenue Line
Image via Wikimedia Commons, SPUI
Originally built as part of the first standard elevated line in Brooklyn, this BMT line ran from the Fulton ferry terminal to Cypress Hills on the Jamaica line. A majority of the line was demolished in the early 1900s as subways began to dominate the city. However, the portion of the line that ran on Lexington Avenue through Bedford-Stuyvesant lasted until 1950, when it was shut down due to low ridership and a plan was introduced to expand local roadways for cars and buses. This line would be exceptionally useful today as it would connect the growing area directly to the nearby J and G trains.