The consortium SPIE Batignolles TPCI/Sotrabas/Cegelec Centre Est/SPIE Batignolles Energie – Fontelec/BG Ingenieurs Conseils SAS at Boulogne-Billancourt secured the EUR17,268,545 contract, VAT not included, for the refurbishment of Montets rail tunnel (1,882 m) on the Saint-Gervais–Vallorcine railway line. The tunnel at an altitude of 1,385 m, is also used for cars transit when the road RD1506 is closed by avalanche danger. Contact Pascal Blachier, RFF, Lyon, tel +33 4278549-20, fax -61, e-mail pblachier@orga.setec.fr. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=069673-2012. 12/12.
Enfrasys from Rillieux-la-Pape secured the EUR157,025 contract, excluding VAT, for equipment maintenance in the 1882 m Montets tunnel at Vallorcine/Chamonix and in avalanche Pendant tunnel at Chamonix, Lot1; the EUR26,930 contract, excluding VAT, for equipment maintenance in the Sommand tunnel at Mieussy, Lot2. Contact Departement de la Haute-Savoie, Annecy, email dcpfour-serv@hautesavoie.fr. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=469473-2022. Ref.n. 2022a0135. 35/22.
Tendering Authority - Département de la Haute-Savoie
Annecy, France
Procedure Type - Open procedure.
The contract is divided into 2 lots.
Scope of Works
The contract concerns the maintenance of installations and civil engineering structures at the following locations:
- Montets Tunnel (Saint-Gervais – Vallorcine railway line), Vallorcine/Chamonix;
- Pendant Avalanche Gallery, RD 1506 (km 8+273 – 8+724), Chamonix-Mont-Blanc;
- Sommand Gallery, RD 308 (km 9+600 – 9+900), Mieussy.
The works include routine and preventive maintenance of electromechanical systems, structural elements, drainage, and safety installations associated with tunnel and avalanche protection infrastructure.
Tunnel Details
1. Montets Tunnel
- Location: Vallorcine / Chamonix
- Line: Saint-Gervais – Vallorcine railway
- Length: 1,882 m
- Type: Bi-modal tunnel (rail and road traffic)
The Montets Tunnel operates as a dual-use facility, carrying railway services and, during winter closures of the Col des Montets pass, controlled road traffic.
Maintenance elements include:
- Automation and signalling systems managing alternating train and vehicle traffic;
- Ventilation systems for smoke extraction;
- Fire detection installations;
- Safety niches and associated equipment.
Due to its strategic role in maintaining winter access to the Chamonix valley, maintenance interventions are typically scheduled during off-peak periods.
2. Pendant Avalanche Gallery
- Location: RD 1506, km 8+273 – 8+724, Chamonix-Mont-Blanc
- Type: Avalanche and rockfall protection gallery
The structure provides protective cover to the departmental road against snow slides and rockfalls.
Maintenance elements include:
- Structural reinforcement works;
- Waterproofing measures;
- Inspection and repair of concrete arches;
- Cleaning and rehabilitation of drainage systems;
- Upgrading or replacement of internal lighting systems.
3. Sommand Gallery
- Location: RD 308, km 9+600 – 9+900, Mieussy
- Type: Avalanche and rockfall protection gallery
This gallery provides access to the Sommand ski area and is located in a mountainous environment subject to erosion and snow accumulation.
Maintenance elements include:
- Inspection and maintenance of rockfall protection systems (nets and anchors);
- Repair of roof slab and apron sections to ensure resistance to falling debris;
- Civil engineering maintenance of structural components.
Traffic management measures, including alternating traffic arrangements or temporary closures, may be required during maintenance operations.
Contract Value
Estimated contract value: EUR 2.04 million (excluding VAT).
Duration
Contract duration: 12 months.
Deadline
23 March 2026
Contact Details
Département de la Haute-Savoie
Attn: Martial Saddier
Annecy, France
Tel: +33 0450332132
Email: dcpfour-serv@hautesavoie.fr
Reference: 2026A0056
Official Journal of the European Union: OJ S 036 – Notice 121916-2026
Further information:
https://ted.europa.eu/en/notice/-/detail/121916-2026. 09/26.
