Park Avenue Tunnel

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 used to travel northbound from 33rd Street toward the Park Avenue Viaduct. The tunnel is under the jurisdiction of the New York City Department of Transportation. It is designed to carry one lane of northbound car traffic from 33rd to 40th streets. 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). The IRT Lexington Avenue Line of the New York City Subway, carrying the 4, ​5, ​6, and <6> trains, runs parallel to the Park Avenue Tunnel in two tunnels below it.

Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).