RN 59 - Maurice Lemaire tunnel - Vosges / Alsace - renovation

RN 59 - Maurice Lemaire tunnel - Vosges / Alsace - renovation

Client

APRR - Société des Autoroutes Paris - Rhin - Rhône

Execution

2002 - 2008

Collaboration

In partnership, BG as pilot of the group

Total costs

208 mio EUR

Project description

This rail tunnel was drilled through the rock in 1936 and was converted to a road tunnel in 1973. It has a cross-section of around 60m2; a length of 7km; and is serviced using ventilation plant at each tunnel portal.

Civil engineering

  • Drilling of a parallel tunnel of 6m diameter to enable evacuation and ventilation (7km in length)
  • Organisation of the platforms at the portals
  • Transformation of the ventilation plant
  • Excavation of the pedestrian link passages and smoke extraction ducts between the main tunnel and the escape tunnel
  • Creation of electrical sub-stations and galleries to permit turning within the tunnel
  • Demolition of the reinforced concrete ventilation chambers, and rehabilitation of the gallery
  • Complete reconstruction of the tunnel drainage networks including installation of a slotted gutter; partial resurfacing of the road

Equipment

  • Refurbishing of the energy network; the central plant room; the emergency communication system (RAU); and the surveillance video system
  • Modification of the ventilation system
  • Installation of a radio transmission system and an automatic incident detection system (DAI)
  • Renovation of the safety alcoves and the fire suppression system
  • Creation of a new centralised command post (PCC)

Services provided

  • Project management (coordination and control of the projet, communication, reviews)
  • Safety file
  • Background measurements and studies (topography, geology, hydrogeology, environment)
  • Concept, scheme and detailed design
  • Preparation of the tender documents
  • Validation of the construction design studies undertaken by the contractors
  • Direction of the construction works
  • Preparation of the administrative documents (including water control regulations, safety file, study of specific risks)
  • Operational management assistance

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