LINING & FORMWORK | PROJECTS
ACQUIRING MAJORITY IN KERN TUNNELTECHNIK
In late 2023, Peri Group acquired a majority stake in Kern TunnelTechnik. Kern TunnelTechnik has supplied lining formwork and
logistics systems for a variety of projects in Europe and North America - such as the London Thames Tideway sewer tunnel, in UK, the Gubrist road tunnel renovation, in Switzerland, and the Hampton Road Bridge Tunnel, in the US. Following the purchase, Kern has continued to operate as an independent business unit within the group. The majority stake in Kern was a key step to enable Peri to be “broadening our engineering expertise in infrastructure construction,” then noted CEO Christian Schworer. Peri bought the shares in Kern Group from Walo Group, which had been a strategic investor since 2017 and the companies would continue co-operation. Kern, a Swiss-based company, was founded in 2010.
On the Gubrist tunnel, last October Kern announced a
milestone point with completion of renovation of the second of the 40-year old tubes. The contractor is a JV of Implenia, Walo Bertschinger, and Anliker. Kern has formwork that passed its Factory Acceptance Test
(FAT) last autumn for use on cross passages of HS2’s Northolt Tunnel East package. The contractor JV comprises Skanska, Costain and Strabag (SCS JV). In Slovenia, the company is contributing formwork and a
reinforcement gantry to sections (tunnels T2, T4) of the rail modernisation project between Divaca and Koper. Kern has also had formwork systems involved in many other projects in Europe - such as Hinkley Point C outfall tunnels, in UK; Bad Bergzabern road tunnel, in Germany; Pekel road tunnel, in Slovenia - and a number beyond, including Polihali diversion tunnels for Lesotho Highlands Water Project, Ph2.
Top: Logistic bridge and transport system for invert of Gubrist road tunnel project, Switzerland Above left: Lining formwork pre-assembly for London Tideway East sewer contract Above right: Final lining system in tunnel IMAGES COURTESY OF KERN/PERI
14 | March 2025
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