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Last section of A89 Lyon - Bordeaux motorway

Delivery date : 2012 - Client : ASF


The 50 km section between Balbigny and La Tour de Salvigny completes the major East-West motorway and brings the journey time from Lyon to Bordeaux down to five and a quarter hours. The A89 links the Atlantic coast and the Rhône-Alpes region, offering a tangible solution to reduce the isolation of rural territories.

Services performed

Design and construction of electromechanical systems equipping three double tube tunnels (total length 11.4 km) on this section, together with the operational control system.

Technical Details

  • Power (HV/LV)
  • Lighting
  • Ventilation (115 booster fans)
  • Signalling (40 variable message signs)
  • Video (105 cameras)
  • Fire control
  • Metalwork
  • Paintwork (100,000 m²)
  • Automatic control system and supervision (20,000 I/Os)
  • Operational control system


Enhanced availability via redundant systems


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