• Looking up at the Gateway Arch

    Jefferson

    National Expansion Memorial Missouri

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  • Pedestrian Access to the Gateway Arch From Downtown

    Pedestrian traffic on the Chestnut bridge will be closed as of today Monday, March 31, 2014. This will leave the Pine St. bridge as the Arch grounds point of entry to and from the city. The new Walnut St. bridge will open next Friday to foot traffic.

Arch Architecture

View of the rising Arch facing east, 1963
The architecture of the Arch is one of its most interesting aspects. Learn more about the materials and techniques used in the construction of the Arch in a detailed account by J.E.N. Jensen, Associate Director of the National Park Service. Equally fascinating is the story of the Arch's architect, Eero Saarinen as well as the mathematical equation used to create the catenary curve shape of the Arch.
 
 
Time lapse slide show of the construction of the Arch.
The image on this page is an animated image of the construction of the Gateway Arch between February 29, 1964 - October 28, 1965. There are nine images in this animation that show the Arch at different points during its construction.

Did You Know?

The insertion of the last piece of the Gateway Arch

The Gateway Arch at the Jefferson National Expansion Memorial was completed on October 28, 1965. To learn more about the construction of the Gateway Arch click here. More...