{"id":4407756,"date":"2026-07-01T09:53:14","date_gmt":"2026-07-01T07:53:14","guid":{"rendered":"https:\/\/www.ersigroup.com\/project\/viaducto-el-portal-sobre-rio-guadalete\/"},"modified":"2026-07-01T10:05:09","modified_gmt":"2026-07-01T08:05:09","slug":"viaduct-el-portal-over-river-guadalete","status":"publish","type":"project","link":"https:\/\/www.ersigroup.com\/en\/project\/viaduct-el-portal-over-river-guadalete\/","title":{"rendered":"El Portal Viaduct \u2013 over the River Guadalete \u2013"},"content":{"rendered":"

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Guadalete River Railway Viaduct<\/span><\/b><\/span><\/p>\n

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The Guadalete River Railway Viaduct<\/strong> forms part of the double-tracking works on the Jerez Airport \u2013 C\u00e1diz<\/strong> section of the Seville\u2013C\u00e1diz railway corridor. The infrastructure was designed to increase the capacity of the line, eliminate three level crossings and upgrade the route for a design speed of 220 km\/h<\/strong>. With a total length of 3,221.7 metres<\/strong>, the viaduct crosses the Guadalete River and its floodplain twice, minimizing environmental impact through the use of a precast bridge deck solution with spans of up to 49 metres<\/strong><\/span><\/p>\n

The most significant engineering challenge of the project was associated with the deep foundation system, constructed on a soft soil stratum exceeding 25 metres<\/strong> in thickness, which was unable to adequately withstand the horizontal loads transmitted by railway traffic. To ensure the required stiffness of the soil\u2013foundation system, large pile caps were designed and supported on groups of five bored piles with a diameter of 2.0 metres<\/strong>, ranging from 39 to 54 metres<\/strong> in length. The piles were installed using permanent steel casings until reaching the competent marl formation<\/p>\n

From the perspective of fabricated reinforcing steel, the project represented one of the most technically demanding railway structures undertaken by ERSIGROUP<\/span><\/b><\/span>. The reinforcement cages for the bored piles reached exceptional reinforcement densities of up to 1,200 kg of reinforcing steel per linear metre<\/strong>, incorporating configurations of up to 158 longitudinal \u00d832 mm reinforcing bars<\/strong> at the pile head together with \u00d816 mm transverse reinforcement spaced at 70 mm<\/strong>. Individual reinforcement cages weighed approximately 15 tonnes<\/strong>, while fully reinforced piles reached weights of up to 31.2 tonnes<\/strong>. These dimensions required the development of dedicated fabrication equipment together with specialized procedures for transportation, lifting and on-site assembly<\/p>\n

ERSIGROUP<\/span><\/b><\/span><\/strong> participated in the supply, fabrication and installation of reinforcement for bored piles, pile caps and bridge piers. All reinforcement cages were fully prefabricated under controlled factory conditions and delivered to site ready for installation, ensuring high dimensional accuracy for the vertical splicing of reinforcement cages and facilitating the construction of the complex reinforcement connections between piles and pile caps. The industrialized fabrication process optimized production efficiency, improved safety during the handling of heavy reinforcement assemblies and guaranteed full traceability and quality control of the reinforcing steel in one of Spain’s most demanding railway infrastructure projects<\/p>\n

The combination of detailed engineering, industrialized reinforcement fabrication, dedicated production equipment and specialized logistics enabled the successful execution of a technically complex infrastructure characterized by deep foundations and exceptionally high reinforcement densities, reinforcing ERSIGROUP<\/span><\/b><\/span>‘s<\/strong> expertise in the delivery of major railway projects through advanced fabricated reinforcing steel solutions<\/p>\n

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KEY MILESTONES<\/span><\/b><\/span><\/p>\n

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