The Mont Blanc Tunnel will be completely closed to traffic from September 1st to December 12th.
Officials say the shutdown is unavoidable, as detection systems, fans and other equipment must be dismantled, making traffic impossible.
The closure was agreed by French and Italian authorities for safety reasons.
During the 15-week period, heavy goods vehicles will be diverted to the Fréjus Tunnel, while cars will need to use alternative Alpine routes such as the Grand St. Bernard Pass.
Swiss Post announce job cuts
Swiss Post will eliminate up to 110 positions in 2027, blaming shrinking letter volumes and fewer over-the-counter transactions
Autumn arrives in Switzerland
The heatwave that has gripped Switzerland since May finally breaks tomorrow
Driver warning in Vaud
Drivers in western Vaud face four nights of disruption on the A1 next week.
Mixed results in school classrooms
Swiss 15-year-olds still rank among the world's best in maths and science, but their performance in reading and maths is sliding
Good news for household bills
Swiss households will pay a little less for electricity next year
Fuel reserves now in use
Switzerland is dipping into its emergency fuel reserves for the first time this year to keep petrol and diesel flowing
