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Mont d'Ambin Base Tunnel

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General Information

Structural Type: Tunnel
Function / usage: High-speed rail tunnel
Construction phase: 2006 - 2015
Status: under construction

Geographic Information & Related Structures

Location: Saint-Jean-de-Maurienne, Savoie (73), Rhône-Alpes, France, Europe
Venaus, Torino, Piedmont, Italy, Europe
Part of:

Technical Information


tunnel length 53.1 km
descent La Praz length 2 500 m
tunnel section area 58 m²
longitudinal slope 12%
descent Modane length 4 000 m
descent St-Martin-d.l.-Porte length 2 050 m


Technical advisor to the client
Structural engineering
Main contractor

Relevant Web Sites

Relevant Publications

Internal Information
Structure-ID: 20004833
Created: 05/09/2002
Last Updated: 22/07/2014