Park Avenue Viaduct

Manhattan, United States

Freely accessible

Public space — no opening hours to check.

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Heritage registerNational Register of Historic Places↗

The Park Avenue Viaduct, also called the Pershing Square Viaduct, is a Beaux-Arts steel roadway spanning Park Avenue between 40th and 46th Streets in Manhattan. Proposed in 1900 by New York Central Railroad engineer William J. Wilgus as part of Grand Central Terminal's development, the viaduct was constructed in two phases: its western leg was built between 1917 and 1919, initially carrying two-way traffic, while the eastern leg was completed in 1928 for northbound traffic after the western leg was reconfigured for southbound use only. The structure comprises two distinct sections—a steel viaduct from 40th to 42nd Streets, with flanking street-level service roads known as Pershing Square, and a pair of roadways from 42nd to 46th Streets that navigate around Grand Central Terminal, the MetLife Building, and through the Helmsley Building. The section from 40th to 42nd Streets was designated a New York City landmark in 1980 and listed on the National Register of Historic Places in 1983. The viaduct underwent renovation in the early 1990s.