Safety recommendations
Safety recommendations SITAF recommends that drivers exercise extreme caution and strictly adhere to signs inside the tunnel, remembering that overtaking is absolutely prohibited during one-way and two-way traffic. For traffic information, it is recommended to review the information disclosed with the Variable
Gran Bosco Est Service Area – Toilet closures from December 1st to 3rd, 2025
Susa, 25 November, 2025 – SITAF, concessionaire of the A32 Turin-Bardonecchia motorway and the T4 Frejus Tunnel, informs that, from 1 to 3 December 2025, the Gran Bosco Est Service Area in Salbertrand (towards Turin) due to maintenance the toilets
Frejus Tunnel: Total closure from December 13 to 14, 2025
Bardonecchia, December 1, 2025 – SITAF SpA, concessionaire of the A32 Turin–Bardonecchia motorway and the Frejus Tunnel (T4), informs users that on Saturday, December 13, from 10:00 PM to 6:00 AM on Sunday, December 14, 2025, for maintenance work, the
Gran Bosco Est Service Area – Toilet closures from December 1st to 3rd, 2025
Susa, 25 November, 2025 – SITAF, concessionaire of the A32 Turin-Bardonecchia motorway and the T4 Frejus Tunnel, informs that, from 1 to 3 December 2025, the Gran Bosco Est Service Area in Salbertrand (towards Turin) due to maintenance the toilets
Gran Bosco Est Service Area – towards Turin closure on the nights of 19, 20, and 21 November 2025.
Susa, 18 November, 2025 – SITAF, concessionaire of the A32 Turin-Bardonecchia motorway and the T4 Frejus Tunnel, informs that, during the nights of 19, 20, and 21 November 2025, from 10:00 PM to 6:00 AM, the bar at the Gran
Frejus T4 tunnel – Temporarily modified traffic regime
Susa, 31 October 2025 – SITAF SpA, concessionaire of the A32 Turin–Bardonecchia motorway and the Frejus Tunnel (T4), informs users that, to allow technical maintenance works, the circulation regime within the tunnel will be temporarily modified of the Frejus Tunnel. Periods
Frejus T4 tunnel – Temporarily modified traffic regime
Susa, 31 October 2025 – SITAF SpA, concessionaire of the A32 Turin–Bardonecchia motorway and the Frejus Tunnel (T4), informs users that, to allow technical maintenance works, the circulation regime within the tunnel will be temporarily modified of the Frejus Tunnel. Periods
Closing of the User Relations Center on 31 October 2025
Susa, 20 October 2025 – SITAF, concessionaire of the A32 Torino – Bardonecchia and the T4 Frejus Tunnel, announces that the office of the User Relations Center will be closed on 31 October 2025. For information on traffic, we recommend that
Work on the AVIGLIANA – RIVOLI section from October 6 to 12, 2025
Susa, September 30th, 2025 – SITAF, concessionaire of the A32 Turin-Bardonecchia motorway and the T4 Frejus Tunnel, informs that, between October 6th and 12th, renovation works will be carried out on the joints on the Rosta 1 and Rosta 2
Access to the Frejus Tunnel: Regulations for vehicles and exceptional transport from September 22 to December 12, 2025
Susa, September 18, 2025 – SITAF, concessionaire of the A32 Turin–Bardonecchia motorway and the Frejus Tunnel (T4), announces that access to the Frejus Tunnel on the Italian side will be regulated to ensure safety and traffic flow. Vehicles with a WIDTH