Virtual Discovery

Gateway Arch

The Gateway Arch is a monument to the spirit of brave pioneers and celebrates St. Louis’ role in westward expansion. Construction on architect Eero Saarinen’s stainless steel arch design began in 1961 and was completed in 1965. Made of over 43,000 tons of concrete & steel, it’s the tallest man-made monument in the United States.


Eero the architect planned, designed, and reviewed the layout of the arch’s structure. His detailed sketches provided the blueprint for the arch’s construction.

Structural Engineer

Fred the engineer made calculations for the arch’s structural system and loads to ensure it could withstand stress and pressure from environmental and other forces.

Steel Detailer

Ed the detailer provided dimensions and layout instructions for each steel part. His precise specifications ensured correct installation and erection of the framework.