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Geneva: Traffic disruptions due to roadworks on Avenue Appia and Nations Tunnel

Lane closures and intersection changes from 19 May to 29 August 2025

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(Image: SIG)

Work related to the GeniLac thermal network will be carried out around the Appia intersection over the coming months by Geneva Industrial Services (SIG).

Traffic will continue to flow, but some lanes, cycle paths and pedestrian crossings will be temporarily closed, affecting all road users. It should be noted, however, that the main changes to the intersection will only come into effect after a preparatory phase scheduled to last until 3 June. 

Please find here information for residents and a notice of roadworks, including a detailed map of the area and the diversion in place.

The Swiss Mission would like to thank road users in advance for complying with the signs in place to keep traffic flowing as smoothly as possible.