Grosshof Bridge in Kriens
Relief for Lucerne’s city center more than just traffic.
To free Lucerne’s city center from through-traffic, a new motorway tunnel is being built to the west of the city towards Kriens. At the southern portal, today’s four-lane Grosshof Bridge will be expanded to eight lanes. The result will be a multifunctional structure a motorway on the intermediate level and, above it, a rooftop park offering spectacular views of Mount Pilatus and the Alpine panorama.
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A Gateway Between City and Landscape
The bridge emerges from the slope of the Sonnenberg, spans across Luzernerstrasse, and seamlessly integrates into the topography of the motorway access on the opposite side. Between Sonnenberg and Salesia Hill, a natural gateway is created - part of the landscape, not a staged backdrop.
On the city side, it can be experienced as a bridgehouse. On the valley side, it merges with nature. In doing so, it weaves together the existing and the new into a vibrant city-landscape.
Green Oasis on the Roof
The rooftop landscape connects seamlessly to the existing trail network on the Sonnenberg side, creating a direct link to the motorway park to the south.
Its design is deliberately understated: species-rich meadows, wild shrubs, and small trees form an ecologically valuable, open, and extensive landscape.
At the foot of the Sonnenberg, a promenade leads towards Kriens – beneath the bridge it transforms into a three-dimensional play landscape, combining movement, play, and social interaction. Between the bridge-house and the adjacent new buildings, two airy rows of trees provide soft, natural transitions.
Architecture that Creates Added Value
The new Grosshof Bridge is not only an infrastructure project, but also a space for encounter and recreation.
The project demonstrates how infrastructure can generate quality of life – and how architecture can reconcile city and nature.
