Pont de l'Oise Rehabilitation: INFRANEO's Expertise in Service of Infrastructure Longevity

The Pont de l’Oise, located on the Route d’Oise in Demi-Quartier, is a masonry structure essential for local traffic. Faced with significant structural issues, the municipality has entrusted INFRANEO with the project management of the repair works to ensure the longevity of the structure.

An In-Depth Diagnosis to Target Pathologies

Before any intervention, our teams conducted a detailed inspection to identify the pathologies affecting the bridge. Among the main issues identified:

  • – Infiltrations compromising the structure
  • – Damaged roadway affecting user safety
  • – Masonry deformations requiring reinforcement
  • – Corrosion of metal tendons, weakening stability
  • – Écartement du tympan et des murs en retour, conséquence des poussées du remblai et de la détérioration des maçonneries


Faced with these challenges, we devised a rehabilitation strategy ensuring the bridge's durability while minimizing future interventions.

Une solution technique adaptée Après une analyse approfondie, INFRANEO a retenu un programme de travaux alliant performance et respect de la structure existante : 🔹 Remplissage en béton et dalle de couverture en béton armé pour renforcer la structure 🔹 Mise en place d’une étanchéité de surface pour prévenir les infiltrations 🔹 Remplacement des garde-corps afin d’améliorer la sécurité des usagers 🔹 Suppression des tirants corrodés pour préserver la stabilité de l’ouvrage 🔹 Réfection des joints de maçonnerie pour restaurer la cohésion des matériaux 🔹 Reprise du tympan et des murs en retour pour assurer la résistance aux efforts latéraux


A Tailored Technical Solution

After an in-depth analysis, INFRANEO selected a work program combining performance and respect for the existing structure:

  • – Concrete filling and reinforced concrete cover slab to strengthen the structure
  • – Installation of surface waterproofing to prevent infiltrations
  • – Replacement of guardrails to improve user safety
  • – Removal of corroded tendons to preserve the stability of the structure
  • – Repair of masonry joints to restore material cohesion
  • – Repair of the tympanum and return walls to ensure resistance to lateral forces

A Rigorous Project

This ambitious technical project was entrusted to our teams from the Lyon, Saint-Georges-de-Reneins office, who applied their full expertise to ensure precise and efficient monitoring of the work.

INFRANEO is committed to ensuring the safety and longevity of infrastructures.

👏 Congratulations to all the teams involved in this large-scale project!



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