The work

The latest work news

Updated on 2025 December 11

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Participatory afforestation on the island of Devant with the children of the Charles Péguy school in Poissy

Published on 2025 December 05

1 min reading

The transformation of the Mare aux Bœufs bridge

Published on 2025 December 05

1 min reading

Participatory afforestation on the IIe de Devant in Conflans Saint Honorine

The main stages of the work

Today

2021-2025

Concessionary works

Today

2025

Preparatory work

2026-2027

Infrastructure works

2028

Testing and dry run before commissioning

Work by sector

Forest of Saint-Germain south

Poissy La Bruyère

Poissy Centre - Gambetta

Poissy Europe

Poissy - Saint-Exupéry district

Forest of Saint-Germain north

Achères