MAA Found Math for the Week of November 12, 2012
MAA Found Math: Stephen J. Wilson (Iowa State University) sent us this photo of the High Trestle Bridge across the Des Moines River between Madrid and Woodward, Iowa. A spiral is formed as the 41 square structures rotate along the span of the bridge. We originally featured this bridge on July 11, 2011.
See math in the world around you? Send your photos to editor@maa.org.