Underground extension of Geneva station enters final stage

underground extension of Geneva stationThe Swiss railways CFF has started these days the last phase of the preparatory work on the underground extension of Geneva station, carried out under the Léman 2030 programme.

Since 2019, SBB has been carrying out a series of preparatory works for the underground station extension project, aimed at modernising railway facilities in the Geneva region and maintaining train movements during the works at the underground station.

The final phase of this work has now begun, which involves the construction of a new train maintenance hall to replace the old one that was demolished. In addition, a new building will be built for CFF’s maintenance and intervention teams.

In addition, work is planned to extend platforms 3 and 4 (lines 4, 6, 7 and 8) to a total length of 420 metres from autumn 2025. This will allow longer trains to be parked without disrupting operations, the press release posted on CFF’s website states.

The infrastructure of lines 6 and 7 (rails, broken stone and sleepers) will be completely renewed, and 11 other lines in the railway station parking area will be modified.

This preliminary work is expected to be completed, according to the current schedule, at the end of 2026, with a budget of CHF 134 million (equivalent to more than €136 million). Trains will run as normal during the construction period, except for some weekends in 2024, when intensive work will take place.

The actual project could not start until 2027

In order to increase transport capacity, the Federal Office of Transport, CFF, the Canton and the Municipality of Geneva have launched a project for the underground extension of Geneva station, which mainly involves the construction of an underground platform, two access tunnels to Lausanne and Geneva Airport and the creation or widening of access passages.

Subject to obtaining construction permits, the site could start in 2027 at the earliest and the work will take about eight years. The budget allocated is around 1.88 billion Swiss francs, equivalent to more than 1.9 billion euros, and the project is part of the Léman 2030 programme, with a budget allocation of four billion francs.

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