161st Street – Yankee Stadium is a New York City Subway station complex shared by the elevated IRT Jerome Avenue Line and the underground IND Concourse Line. Located at the intersection of 161st Street and River Avenue in the Bronx, it is served by the:

4 train at all times
D train at all times except rush hours in the peak direction
B train during rush hours

Yankee Stadium is outside and many Bronx County courts, government facilities, and shopping districts are a short walk to the east. (Yankee Stadium is also accessible via the MTA's Metro-North via the Yankees – East 153rd Street station.)

This is one of only two station complexes in The Bronx (the other being 149th Street – Grand Concourse). When the IND portion was built in 1933, paper tickets were used to transfer between the two lines; this method was used until the 1950s, when the indoor escalators were built. The complex has been fully renovated to include ADA-accessible elevators to all platforms.

The combined passenger count for the complex in 2011 was 8,605,893, making it the busiest station in the Bronx and 36th overall.

en.wikipedia.org/wiki/161st_Street_%E2%80%93_Yankee_Stadium_(New_York_City_Subway)