The Metropolitan Transportation Authority released pictures Monday that it says shows that the Second Avenue subway project is on schedule.
The photos show construction work happening at the 86th and 96th Street stops on the Upper East Side.
The 86th Street excavation is almost done, and work on the 96th Street mezzanine area has started.
The stations, along with a 72nd Street stop, are scheduled to open in December 2016.
Future phases of the $4.5 million project will extend the Second Avenue subway to 125th Street, Houston Street and Hanover Square.