Will the tunnel have an impact on the environment?

The tunnel will run deep enough under the town hall park to have no impact on the built heritage.

The impacts on vegetation have been reduced to a minimum. Plant compensation will be implemented with at least one tree replanted for every tree removed.

The numerous surveys carried out (in 2010, 2014 and from 2018 to 2020) have made it possible to know the constitution of the subsoil, to confirm the feasibility of the tunnel and to define the appropriate construction methods.

More information on the support of the September 2023 public meeting.