The World's Most Expensive Tunnel: Crossings and Costs
August 21, 2026
The Mont-Blanc tunnel is the most expensive tunnel in the world, with tolls reaching up to €410 for just 11 kilometers. Although the crossing is quick and safe, the cost per kilometer is significantly high. The tunnel connects France and Italy and required collaboration between the two countries for its construction. Tolls are particularly high for commercial vehicles. There is an option to purchase a round-trip ticket.