New York City

MTA Advances $2 Billion Second Avenue Subway Extension in East Harlem After Decades of Delay

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Published on August 18, 2025
MTA Advances $2 Billion Second Avenue Subway Extension in East Harlem After Decades of DelaySource: Metropolitan Transportation Authority

The Metropolitan Transportation Authority (MTA) is preparing to launch a significant phase of the Second Avenue Subway extension, advancing into East Harlem under a nearly $2 billion contract aimed at extending Q train service further north. After half a century of standstill since the city's financial crisis halted progress in 1975, the MTA Board has agreed to terms with Connect Plus Partners, a collaboration between Halmar International and FCC Construction, to start the substantial task of extending one of New York's essential transit arteries, as reported by Gothamist.

This phase of the project involves building new stations at 116th and 125th Streets and rehabilitating an unused tunnel segment between 110th and 120th Streets. The planned 125th Street station will connect with existing transit lines at a key junction for commuters. Governor Kathy Hochul, speaking at a rare August board meeting held in Harlem, described the expansion as long overdue and noted its potential to improve accessibility and influence transit patterns in a neighborhood with a longstanding reliance on public transportation, according to a CBS News New York report.

MTA officials estimate a $100 million reduction in labor costs compared to the first phase, completed in 2017. This decrease is attributed to technological improvements and refined planning, including the planned use of a "state-of-the-art" tunnel boring machine capable of excavating and installing tunnel linings simultaneously, which is scheduled to begin operation in 2027. The current phase of the Second Avenue Subway, with a projected cost of $7.7 billion, includes initiatives aimed at expanding job opportunities and prioritizing local hiring in East Harlem, according to MTA construction chief Jamie Torres-Springer in a statement shared with Gothamist.

As construction preparations progress and concrete work begins, some longtime residents have received vacancy notices as the city uses eminent domain to clear the way for the subway extension. Discussions about the project’s direction continue, including previous plans to extend the line west toward St. Nicholas Avenue to connect with the A, B, C, and D trains, reflecting ongoing efforts to enhance transit connectivity, according to MTA officials. MTA Chair Janno Lieber told CBS News New York that they are "moving forward with the largest tunneling contract in agency history, but – more important – with a project that pencils at the lowest cost per rider of any heavy rail project in America." The expansion is set to alter East Harlem’s infrastructure and transit options.