8. Landmarked Viaducts

There are two viaducts that are landmarked in New York City – the Manhattan Valley Viaduct that runs from 122nd to 135th Streets and the Pershing Square Viaduct that runs on Park Avenue from Grand Central Terminal. The Manhattan Valley Viaduct was built for the IRT subway line and the Landmarks Preservation Commission reports that it “is the most imposing and visually impressive aboveground engineer ing structure of the IRT subway system” an an “excellent example of a double-hinged parabolic braced arch structure. Supporting both the tracks and the 125th Street station, the viaduct is a testament to the skill of the engineers and contractors who designed and built New York City’s first subway between 1900 and 1904.”

The metal and iron Pershing Square Viaduct was designed by the architects of Grand Central Terminal, Warren & Wetmore, included as part of the central circulation system of the terminal itself and made Park Avenue a complete north-south avenue.