Martutene Footbridge

Martutene, San Sebastian

Built in 2016


Martutene Footbridge

The design approach of the Bicontentio Sinus Footbridge in Martutene (San Sebastián) begins with an initial assessment of the site that will receive the future bridge. The existing topography determines the support conditions, and the resulting bending moment diagram of the structure inspires the final shape of the bridge.

To achieve a slenderer appearance, the cross-sections along the length of the footbridge are very variable.

The structure consists of three spans: a large one of 62.6m and two small side spans of 2.8m. Combined with two small overhangs on either side, the total length is 71.1m. 

Scope

Project

Site

Martutene, San Sebastian

Status

Built in 2016

The main features of the Martutene footbridge are the following ones: design based on the existing topography, shape that mimics the bending moment diagram, and restraining in abutments.

The design based on the existing topography allows to hide the abutments, and shows the bridge as an one- off object that connects seamlessly with the terrain. The bending moment diagram silhouette allows to optimise the material, obtaining an elegant an efficient shape. The use of an structure that is restrained on both abutments is versatile from a constructive point of view.