Passenger traffic will be redirected via the pass whenever possible, while heavy goods vehicles (>3.5 tons) will be stopped 30 minutes before the tunnel's closure at both the north and south entrances.

Every year, the Gotthard Tunnel is closed in March/April (1 week), June (2 weeks), and September/October (3-4 weeks) for 26 nights.

The nighttime closures are primarily aimed at carrying out work in the traffic space: cleaning tunnel walls, lighting systems, SOS niches, ventilation channels, and other facilities. Minor structural repairs are carried out where necessary, and maintenance work on operational and safety systems is also performed, during which the condition of these equipment is assessed.