The Park Avenue Tunnel, also called the Murray Hill Tunnel, is a 1,600-foot-long (488 m) tunnel that passes under seven blocks of Park Avenue in Murray Hill, in the New York City borough of Manhattan. Traffic currently goes northbound from 33rd Street toward the Park Avenue Viaduct. The tunnel is under the jurisdiction of the New York City Department of Transportation, and carries one lane of northbound car traffic from East 33rd Street to East 40th Street; from 40th Street north, traffic must follow the Park Avenue Viaduct around Grand Central Terminal to 46th Street. The vertical clearance is 8 ft 11 in (2.72 m).