Lucerne Bypass: Enhancing Regional Infra

Alleviating Congestion for Environmental Advancements

«The Lucerne Bypass offers a sustainable traffic solution, acting as a vital artery to reduce diverted traffic and enhance the region's quality of life through initiatives such as green spaces along the enclosed Grosshof Bridges.»
Lucerne has seen a significant traffic surge, straining its highways. The Lucerne Bypass addresses this challenge, promoting sustainable development of the A2 and A14 highways and shaping the region's future.

The Lucerne Bypass national roads project includes the Luzern Bypass Tunnel and its northern and southern extensions. Led by Lombardi, with JV partners Amberg Engineering, Emch+Berger, and WSB, the project focuses on constructing two parallel, directionally separated dual carriageway tunnels.

The engineering consortium ByTuLu, consisting of Lombardi (leader), Amberg Engineering, Emch+Berger, and WSB, is managing the Lucerne Bypass Tunnel subproject. This major urban endeavor involves building two mostly parallel, directionally separated dual carriageway tunnels. In the northern portal area (Ibach), work includes the roadway alignment and connection at the Rotsee junction. In the southern portal area (Grosshof), the focus is on the Lucerne-Kriens connection. The tunnels span approximately 3,800 meters, with about 3,000 meters being mined.

The portal zones, located in densely built-up areas, require meticulous planning due to numerous interfaces with third-party projects at various implementation stages. The city boundary between Lucerne and Kriens intersects the Grosshof area, necessitating the coordination of main supply lines within the perimeter.

This ambitious project, undertaken amidst ongoing traffic, presents significant challenges, particularly within the portal zones. Construction is slated to start in 2026, with an estimated duration of twelve years and a budget of 1.8 billion Swiss Francs. This significant investment underscores the project's pivotal role in reshaping regional mobility and fostering sustainable development.

  • Conventional and TBM tunnelling
  • Urban tunnel, metro
  • Cavern and shaft construction
  • Cut-and-cover
  • Technical buildings
  • Hydraulic tunnels and shafts
  • Urban development
  • Special geotechnical works 

kilometres of the two tubes of the Bypass Tunnel


millions tons of spoil and excavated material are produced


square meters of park-like green areas on the Grosshof bridges

Lat: 47.055136
Lng: 8.292205


R Meier bearbeitet
«It is a pleasure to be actively involved in a project in the region where I live and grew up, contributing to improving the overall traffic situation.» Raffael Meier