Construction of New N06 Escape Passage Simmenfluh Tunnel

The National Roads Maintenance Plan (UPlaNS for short) foresees the rehabilitation of the motorway section N06 Rubigen – Thun – Spiez resp. Wimmis (RUTS). The Simmenfluh Tunnel is located between Wimmis and Latterbach where the N06 becomes the Simmentalstrasse of the 700 m long Simmenfluh Tunnel. It was built in the years 2000–2003 and at the time met the applicable safety norms. As a result of the introduction of new standards it had to be upgraded with an escape tunnel. A 130 metre long escape tunnel will be constructed which cuts across from the centre of the tunnel into the open. The exit is located in the road “Kantonsstrasse“.

This escape tunnel was designed and implemented as part of RUTS Maintenance Project. As project designer for operating and safety systems IUB was also responsible for safety and operating system works in the Simmenfluh escape tunnel.


ASTRA, Thun Branch


IUB Engineering Ltd.

Construction period


Construction costs

CHF 500'000

Scope of services

Project management, design, tendering, technical supervision phases 31 to 53

The following were processed:

  • Energy supply
  • Lighting
  • Ventilation
  • Signalling
  • Surveillance systems
  • Communications & control systems
  • Cable systems
  • Auxilliary systems

Current ASTRA norms were applied.