Concourse Tunnel

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Concourse Tunnel
Carries 3 tracks of the B and D trains of the New York City Subway
Crosses Harlem River
Locale Manhattan and the Bronx, in New York City
Maintained by Metropolitan Transportation Authority
Opening date 1933

The Concourse Tunnel carries the B and D trains of the New York City Subway under the Harlem River between the boroughs of Manhattan and the Bronx, in New York City.