Governor Kathy Hochul will break ground Monday on the long-delayed Second Avenue subway extension, a nearly $7 billion project that could transform Harlem's transit landscape. The Q line will extend to East 125th Street by 2032, adding three stations and connecting riders to the 4, 5, and 6 trains plus Metro-North Railroad.

First proposed in the 1920s, the project stalled repeatedly - abandoned during the Great Depression, halted by 1970s fiscal crisis, and most recently caught in a funding battle with the Trump administration over $60 million in withheld federal money. The MTA sued the federal government in March, but April policy changes unlocked the $3.4 billion Washington was set to contribute.

Representative Adriano Espaillat called the project an 'economic engine for Harlem,' projecting 16,000 jobs from construction. The extension solves decades of disruption that yielded nothing for Harlem residents, with custom German tunnel boring machines arriving next year to navigate challenging soil conditions.

After the first phase's notorious cost overruns, MTA chief Janno Lieber pledged this segment will finish on time and budget. Hochul already committed $25 million for preliminary work on a potential westward expansion - three crosstown stops along 125th Street costing an additional $7.5 billion.