The Park Avenue Tunnel, also called the Murray Hill Tunnel, is a seven-block-long, 1,600 feet (490 m) long tunnel that passes under Park Avenue in Murray Hill, in the New York City borough of Manhattan. Traffic currently goes northbound from 33rd Street toward Grand Central Terminal. The tunnel 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 to 46th Street. The vertical clearance is 8 ft 11 in (2.72 m). The Lexington Avenue Line of the New York City Subway runs parallel to the Park Avenue Tunnel in two tunnels below it.