Wildlife bridges are built from wood today

22.06.2020

The Federal Roads Office is currently building Switzerland's first wildlife bridge made of wood near Suhr (AG). In Neuenkirch (LU) and in the Linth plain (GL), the next wildlife overpasses in timber construction are in the pipeline. Together with the ProHolz Aargau association and ASTRA, we invite you to the construction site tour on 16.09.2020.

Wildlife bridges are built from wood today

Because traffic routes cut through the habitats of wild animals, the Federal Office for the Environment has defined wildlife corridors of supra-regional importance. have been defined. The "AG6" corridor connects the Jura region with the Central Plateau and runs between Gränichen and Suhr. between Gränichen and Suhr over the N01 national road. Soon, a 50-meter-wide arch meters wide arch construction will soon enable wild animals to cross the highway safely. The special thing about it: the construction is made of wood!

Invitation to the Construction site tour
The Federal Roads Office ASTRA, the ProHolz Aargau association and we as the team (Bänziger Partner AG and Timbatec) are pleased to invite you to a guided guided tour of the construction site.

  • Date: Wednesday 16.09.2020, 17.00 hrs.
  • Place: Waldhaus Oberholz in Suhr
  • Program: Short presentations, site tour and Apéro Riche

Registration: Link to registration form

You will receive detailed information about the event after registration. The number of participants is limited to 80 persons.

Production of the Elements
The wildlife overpass Rynetel consists of a 50 meter wide arch construction made of wood, which rests on cast-in-place concrete walls. Hüsser Leimbau AG is currently producing the 17-meter-long wooden girders. A large glue press presses the spruce boards made of Swiss wood into the desired shape. After the curing of the RF adhesive, the girder remains dimensionally stable. These elements will soon be mounted on the cast-in-place concrete walls (picture above). mounted.

Production of the 17 meter long wooden beams at Hüsser Leimbau AG

Long preparation
The fact that wildlife bridges are being built in timber construction today is due in no small the longstanding commitment of Timbatec and other advocates of the timber industry. timber industry. As early as 2005, the Departement Bau, Transport and Environment of the Canton of Aargau commissioned moser+colombo architektur gmbh and Timbatec with a concept study. The result was clear: Wildlife overpasses over freeways can be built without problems despite high earth loads and and impact forces, can be realized without any problems using a timber structure.

In 1998 Timbatec published a basic report for the Swiss Ornithological Institute in commissioned by the Swiss Society for Wildlife Biology SGW, Timbatec showed that wood Swiss Society for Wildlife Biology (SGW), Timbatec showed that wood, as a native raw material, is a cost-effective and ecological ecological alternative for green bridges.

Project information Wildlife overpass Rynetel

  • Spans: 2 x 17.4 meters
  • Length: 35.6 meters
  • Width: 54 meters
  • Bridge area: 1922 m²
  • Construction costs: 13.9 million Swiss francs
  • Owner: Federal Roads Office ASTRA branch Zofingen
  • Planning: Engineering consortium WUEF with Bänziger Partner AG and Timbatec
  • Execution: ARGE FERA with Aarvia Bau AG and Häring AG
  • Supplier Glulam: Hüsser Leimbau AG
Visualization of the wildlife overpass Rynetel

Source: Bänziger Partner AG, www.bp-ing.ch

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