Architect |
Santiago
Calatrava |
Date Built |
1989 - 1992 |
Location |
Seville |
Description |
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In preparation for Expo 92 in
Seville, there was a plan to build 8 new
bridges across the River Guadalquivir
connecting the city centre to the Expo
site. The Alamillo Bridge was one of
those bridges. It is made up of a
142 metre high pylon that is inclined 58
degrees from the horizontal and anchors
the cables that support the road
deck. This point in the river is
known as Meandro San Jerónimo and to cross
it required a 260 metre span. The architect's website explains that, "... The pylon supports the bridgeway with thirteen pairs of cables. The pylon was constructed by lifting segments of the steel shell into place with a large, high-capacity crane, then welding them together and filling them with reinforced concrete. The weight of the pylon is sufficient to counter-balance the deck, and back stays are thus not required. This new type of cable-stayed bridge, which substitutes the weight of an inclined pylon for one set of stay cables, creates a dialogue of balance between pylon and deck." The pylon is a
significant feature on the city's
skyline.
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