The Práxedes Mateo Sagasta bridge, popularly known as Puente de Sagasta or Logroño’s fourth bridge, is the most recent of the constructions over the Ebro river as it passes through the capital of La Rioja. Designed by Javier Manterola for the company Carlos Fernández Casado SL, it was inaugurated on April 30, 2003.
The bridge was built without any support over the Ebro river. The central deck, on which the road rests, is 161 meters long, 18.6 wide and 2 deep, supported by a cable-stayed arch with a maximum height of 28 meters. The arch structure is double, formed by two tubes of 1.2 meters in diameter, slightly inclined to each other to better withstand the bending forces to which they are subjected. The arch separates the traffic of cars in both directions, each having two lanes of 3.5 meters wide.
The sidewalks are made up of two lateral boards 4 meters wide and 1.1 meters deep, which, unlike the road, are not parallel to the central arch, but separate from it in a curved way.
Several spotlights located in the median, sidewalks and banks allow the night lighting of the whole.