ESTIMATED72% CONFIDENCEGiven as scheduled, per the source[1]: "The project is expected to be completed by 2033."
- Start
- Dec 31, 203350% CONFIDENCEfrom the source
Lyon-Turin Base Tunnel Targeted for 2033 Completion
TELT, the joint French-Italian agency building the Mont d'Ambin base tunnel under the Alps, is now aiming to finish the roughly 57km bore by the end of 2033.
- The Mont d'Ambin (Lyon-Turin) base tunnel is a 57.5 km twin-tube rail tunnel under the Alps between Maurienne in France and the Susa Valley in Italy, with completion expected by 2033[2][3]
- Once open it would be the world's longest rail tunnel, ahead of Gotthard at 57.1 km[2]
- By the end of 2024, 39.5 km of the 164 km of planned tunnels had been excavated, including more than 15 km of base tunnel; all civil-works contracts (EUR 4 billion) were awarded and ten sites operating[3]
- The tunnel is estimated at EUR 8 billion (2018 value), with the EU agreeing to finance 40% and willing to go to 55%; the EU's CEF contribution to the project is EUR 1.514 billion[2][3]
- Major contracts were awarded in July 2020 and July 2021 (Lots 1 to 3, EUR 1.47 billion, 1.43 billion and 228 million); Wikipedia says eight TBMs are to be used, while CINEA's project page (status at the end of 2024) counts seven in total, five of them delivered or under construction[2][3]
- The length grew from 52 to 57.5 km after protests over the original Susa Valley alignment; opposition is mainly the No TAV movement[2]
Cost €11.1B
References 372% CONFIDENCE
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]50%youtube.com/watch?v=kc29axOAzRsyoutube.com· Posted Sep 15, 2026· Starts Dec 31, 2033 ✓· 33% of score
Given as scheduled, per the source: "The project is expected to be completed by 2033."
- [2]78%Mont d'Ambin Base Tunnel - Wikipediaen.wikipedia.org· Added Sep 15, 2026· 33% of score
- [3]88%A new Alpine rail connection between Lyon and Turin - CINEA (European Commission)cinea.ec.europa.eu· Added Sep 15, 2026· 33% of score
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