Footbridge over the Manzanares River. Madrid. Spain. 2003.
CFC Scope
Project and technical assistance to works management
Project Director
Javier Manterola Armisén
Project Manager
Miguel Ángel Astiz Suárez
Property
Madrid City Council
Construction
FCC
Construction end date
2003
Typology
Cable-stayed Bridges
Material
Steel
It is a footbridge divided into two circular sections of 147 m span, which are developed to cross the Manzanares River and the two highways that border it.
These two sections, 3 m wide, meet in the middle of the river to allow free pedestrian circulation between the four joining ends. The entire assembly hangs from a cylindrical tower located on a small island between the river and one of the highways. The metal tower is 1.50 m in diameter and 42 m high.
Tie rods are arranged to collect both sections of the footbridges, hanging them from a single edge. These stay cables are developed without any transition of continuity from one end to the other, the latter being anchored to the abutments, which constitutes the spatial balance of the tower in the face of the dissymmetrical, permanent and live overloads.
The metal lintel is similar to the one in Murcia, but in this case it is extended by a ribbed metal slab and an edge tube to reach the 4.50 m width necessary to resist the large vertical axis deflections provided by the suspenders on the deck due to the curved plan of the walkways. The bending produced by this fact is reduced as the curved walkways are counterbalanced by horizontal effects at the end columns.
All curved walkways, hanging from an edge, perform perfectly well under static loads, bending and torsion and dynamic overload actions.


