Serrières Tunnel

A5 - Serrières tunnel - Electromechanical equipement


  • Department for Land Management
    Republic and Canton of Neuchâtel


2009 - 2014


IM Maggia and RGR

Total costs

14.4 mio CHF

Project description

Motorway tunnel located on the N5 to the west of the city of Neuchâtel. It has two uni-directional tunnel bores, each 1100m long. Each bore is equipped with a technical gallery, which links the two main platrooms which are located at each end.

The electromechanical equipment concerned includes the following:

  • Energy
    • Medium voltage distribution, 20 kV
    • Low voltage distribution, TGBT (including uninterruptable power supply)
  • Lighting
    • LED driving lighting
    • Adaptive lighting
    • Active signage
  • Tunnel ventilation (longitudinal ventilation using jet fans)
  • Signage and traffic counting for the motorway section
  • Fire detection
  • Radio communication
  • Video surveillance and automatic accident detection
  • SOS telephone system
  • Control-command management and communication network
  • Low-voltage cabling and fibre-optic network
  • Second fix in the plantrooms: painting, partitions, low-voltage distribution, lifting hoist, cable trays, metalwork, fire compartmentation, doors
  • VCC installation in the plantrooms and technical galleries.


Services provided

  • Scheme design (phase 4.31, in line with SIA 108)
  • Detailed design (phase 4.32, in line with SIA 108)
  • Tender documentation and contract negotiation (phase 4.41, in line with SIA 108)
  • Construction design, construction management and commissioning (phases 4.51, 4.52 et 4.53, in line with SIA 108)

Projects you might be interested in…

BG is currently working on over 2000 projects. Discover some other projects you might be interested in...

> All projects