Gubrist renovation: finished 44 days earlier thanks to Lean!

The newly launched Lean Construction Award from Implenia's Civil Engineering Division recognizes teams that make a special contribution to lean and operational excellence. It is all about efficiency, avoiding waste and continuous improvement.
No fewer than eight outstanding nominations from four countries made it clear in the first year of implementation just how strongly lean construction is practiced by the various teams. After an internal selection process, three finalists were evaluated by a 17-member jury consisting of members of the division's management team.
And the winner is ...
The winning entry was "Cycle and just-in-time logistics in the ARGE GUBRi project":
The Gubrist is part of Zurich's northern bypass and one of the busiest road tunnels in Switzerland. Once the third tube goes into operation in 2023, the two original tubes will be repaired one after the other.
The ARGE GUBRI team, with lean expert Sadat Latajproject manager at Implenia, has impressively demonstrated what lean can achieve during the tunnel renovation.
The team managed to complete the first stage of tube 2 a full 44 days ahead of schedule:
- Cycle planning: clearly structured processes that coordinate all trades
- Just-in-time logistics: material arrives on time instead of blocking storage space
- Continuous improvement: with daily learning on the construction site
The result: considerable savings in time, resources and personnel costs. The knowledge gained is now being incorporated into the work preparation for phase 2.
"The project sets a new benchmark for the organization of the entire tunnel renovation during ongoing operations," explains Sadat Lataj. And Erwin Scherer, Head Division Civil Engineering, adds: "For me, the Gubrist construction site is an outstanding example of the use of lean on a construction site. With perseverance and continuity, we have achieved a remarkable result and considerable savings in terms of time and costs. I would like to congratulate everyone involved on this outstanding success in our Gubrist lighthouse project!"
More about the Gubrist renovation project
More about Lean Construction at Implenia
