We turn constraints into performance!
France · Benelux · Europe
We turn constraints into performance!
Geneva
GTA Infra
6 weeks — Delivered 2024
Committed to infrastructure safety
Located right next to Geneva International Airport, the Ferney tunnel is a key structure in Geneva’s mobility network. In this particularly constrained environment, GTA Group upgraded the tunnel’s fire protection and helped secure the long-term future of this strategic infrastructure. Carried out in a consortium with COLAS Suisse, with engineering support from T‑Ingénierie, the project involved installing around 5,000 m² of fire-resistant boards. Works were scheduled entirely at night to minimise traffic disruption and keep the tunnel available during the day. Over six weeks, the teams combined technical precision, management of operating constraints and coordination between the various stakeholders. This first project in Switzerland demonstrates GTA Group’s ability to deploy its expertise on major infrastructure of the European road network.
République et Canton de Genève — Département des infrastructures (cantonal infrastructure department)
Geneva
2024
6 weeks
GTA Infra
A concentrated intervention under tight operating constraints
Fire-resistant boards installed
Night-time works
COLAS Suisse and T‑Ingénierie
The project contributes to the long-term safety of the tunnel by improving the fire resistance of its structures. Installing the boards requires precise positioning of fixings and rigorous checks of their substrate and anchorage.
This organisation concentrated the works into off-peak periods while limiting disruption for users and neighbouring infrastructure.
Project documentation
Expertise deployed
Specialist in tunnels, underground structures and mobility infrastructure. Passive fire protection, finishing works, structural concrete repair and regulatory compliance — in-house teams, integrated engineering & design office, works under live traffic.
