For the first time in more than twenty years, a new subway station has opened in New York City.

The $2.42 billion, 1.5-mile extension of the 7 line, financed by the city, broke ground in 2007 under Mayor Bloomberg. The 34th St-Hudson Yards station, located at 34th street and 11th avenue, was originally expected to open in 2013 but faced several delays during construction. Train service at the new station began on Sunday, Sept. 13.

“It’s an expression of this city’s capacity to do big things,” Mayor de Blasio said at the ribbon cutting ceremony earlier this month. “The 7 train extension is going to anchor new growth and opportunity on the West Side, and will improve the commutes of tens of thousands of New Yorkers.”

The three-floor station has two inclined elevators between the upper and lower mezzanines, making it the first station to comply with requirements set by the Americans with Disabilities Act (ADA). Other features include an air-tempered platform, keeping the temperature between 72 and 78 degrees Fahrenheit, and the longest column-free station platform and longest escalators of any station.

The 7 train extension is one of three current major MTA projects, along with the East Side Access Project and the Second Avenue Subway. The former, expected to be complete in December 2022, will include new tunnels in Manhattan and Queens as well as a concourse underneath Grand Central Terminal. The Second Avenue Subway, the subway line that will run from on 96th Street to 63rd Street on Manhattan’s east side, is slated for completion in December 2016.