The Second Avenue subway project, first proposed nearly a century ago in the 1920s, could see its next phase completed by 2032 with an extension into Harlem, according to transit officials.

The subway line, which has experienced decades of delays and cost overruns, currently serves the Upper East Side of Manhattan. The proposed extension would create a new transit hub in Harlem, potentially improving subway access for residents in the area.

The Second Avenue subway has been one of New York City's most protracted infrastructure projects. Initial plans for the line date back to the 1920s, but construction on the current incarnation began in earnest in the 2000s. The first phase, serving stations from 96th Street to 63rd Street, opened in 2017.

The timeline for the Harlem extension represents the latest projection for a project that has consistently faced delays throughout its development. Transit officials have not yet released detailed cost estimates for the next phase of construction.

Completion of the extension would mark a significant milestone for the Metropolitan Transportation Authority's efforts to expand subway service in Manhattan, particularly in areas that have historically been underserved by direct subway connections.