|Brief description:||Pedestrian bridge in the 2008 Universal Exposition of Zaragoza|
|Design Engineer:||Luis Javier Sanz|
|Steel Constructor:||Metálicas Estrumar, S.A.|
|Cidect member:||Grupo CONDESA|
Due to the celebration of the 2008 Universal Exposition in Zaragoza (Spain) a “green path” was designed in order to connect the city of Zaragoza with the “Environmental Interpretation Centre” in the village of La Alfranca. This “green path” goes along the Ebro river until the village of La Cartuja, where the path has to cross the river. To achieve this (the distance between riversides is 180m), a steel pedestrian bridge has been designed in five different isometric splices (22,50m + 3x45m + 22,50m).
The footbridge concept is based on the use of double bent tubular elements generating a virtual cylinder with a wooden floor inside. This cylinder has a diameter of 5,60 meters and its surface is created by four helixes spinning clockwise and another four helixes spinning anti-clockwise. In the upper side of the cylinder a longitudinal CHS is located as a support for the helixes.