The Park Avenue Viaduct, also known as the Pershing Square Viaduct, is a roadway in Manhattan, New York City. It carries Park Avenue from East 40th to 46th Streets around Grand Central Terminal and the MetLife Building, then through the Helmsley Building; all three buildings lie across the line of the avenue.
The viaduct was listed on the National Register of Historic Places in 1983, technically as a "boundary increase" to the Grand Central Terminal's listing, but carrying a separate reference number.
Address 171 Park Ave, Manhattan 10017, United States
Coordinates 40°45'8.774" N -73°58'37.232" E