92 World Fair provided the authorities of Seville with an opportunity to
improve the infrastructure of the city and its surrounding areas in the
Province of Andalusia. This initiative included the provision of better road
connections to neighboring towns, a ring road for Seville, and eight new
bridges over the Guadalquivir river.
Bridge spans 200 meters over the section of the river known as the Meandro
San Jerónimo and is connected to a viaduct for automobiles, bicyclists and
pedestrians that crosses La Cartuja island.
is supported by thirteen pairs of stay cables from a 142 meter high pylon
inclined at an angle of 58 degrees. 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 core of
the tower contains a service stair to the top. The weight of the pylon is
sufficient to counterbalance the deck, and backstays 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.
deck consists of an hexagonal, steel box beam spine, to which the stay
cables are attached. The steel wings, supporting the deck to either side,
are cantilevered off this spine, whose 3.75 meter wide top side, elevated
some 1.6 meters above road level, serves as an elevated footway and cycle
route between the separated traffic lanes. The box girder and cantilevered
road deck elements were initially constructed on continuous false work,
supported on the mostly dry riverbed.
Cartuja Viaduct was built as a gateway to the north entrance of the Expo 92
site. It is a continuous structure with a vaulted underside and overlapping
levels. Each of its two 10 meter (33 feet) carriageways cantilevers 5 meters
away from the top of the structure, providing shade for pedestrians on the
cantilevered promenade decks below.
structure receives light through three continuous rows of circular light
wells; one along the crown of the vault between the two carriageways and the
other two at the sides, between the carriageway and the promenades.
site is unusual in that the same river is crossed twice.
Regional Government of Andalusia, Seville. Total length of bridge 200
meters (655 feet) Length of viaduct: 526.5 meters (1,727 feet).