Bicycle bridge over the Töss, Wülflingen

1992

During a flood in the 1960s, the old footbridge at the confluence of the Eulach and the Töss was destroyed. This was not replaced at first. It was not until residents of the adjacent neighborhoods submitted a petition for a new pedestrian footbridge in 1989 that the project planning for a new footbridge was taken in hand.

Facts and images
Construction Data
Involved
Front view
Front view
Montage
Montage
Montage
Montage
The new construction
The new construction
Bearing connection
Bearing connection

The project
From a number of variants in covered and uncovered construction, a waisted truss bridge with inclined struts was chosen for execution. The preliminary studies and the preliminary project including structural analysis, design and cost estimation were part of an internship Stefan Zöllig completed at Ing. Büro Menig in St. Gallen. The scenic surroundings required great care in the construction and design of the new footbridge.

The construction
The Töss Bridge is a truss bridge with a length of 48.00 m and a width of 3.00 to 3.80 m. The deck is made of transversely prestressed planks 6 x 3 cm. The waisted deck consists of transversely prestressed planks 6 x 10 cm. It rests on double-guided transverse beams suspended from steel round bars. The struts are double-guided. They run from the support joint below the deck to the axles every 4.70 m at the truss. In addition to the stiffening deck slab, the primary wind bracing of parabolically laid, prestressed spiral wire ropes (Ø 25 mm) and the secondary wind bracing in sawn timber as St. Andrew's crosses are also used for wind bracing. All components are made of pressure-impregnated white fir.

Construction Data

- lanyard

- galvanized approx. 900 kg

- steel Fe 360 galvanized approx. 1800 kg

- Hardwood (oak) 2 m3

- Glulam 40 m3

- sawn timber FKII 51 m3


Timber ConstructionContractor
Zehnder Holz+Bau AG, Timber Construction Contractor
8404 Winterthur-Hegi


Timber construction engineer preliminary project
Stefan Zöllig c/o Menig AG
9000 St.Gallen


Client
Municipality, Department
8400 Winterthur


Timber engineer Construction project
Andreas Brunner c/o Menig AG
9000 St. Gallen


Structural engineer
Ruckstuhl und Münchinger
8400 Winterthur



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