120 tonne bridge lifted into place

As part of the bicycle path network in the Upper Austrian Phyrn-Eisenwurzen tourism region, the so-called Teichlsteg closes the gap between the municipalities of Klaus and Sankt Pankraz. Even though “Steg” (German for “footbridge” or “catwalk”) is a rather modest description for the 94-metre-long steel lattice bridge weighing in at some 120 tonnes. The steel structure runs parallel to the Phyrn railway route which meant that comprehensive safety precautions were necessary. Additionally, a time window of one hour had to be utilised in order to prevent the railway route from having to be closed. “To allow for this, the superstructure between the trees on both sides of the Teichl River was inserted below the level of the railway bridge,” Michael Lehner with Felbermayr’s project department explains, adding that this also prevented the power from having to be switched off. The lifting job executed in early May was performed with an LR1600 crane with 78-metre main boom. The crane was ballasted with 150 tonnes of rotating cabin ballast as well as 65 tonnes of central ballast and 150 tonnes of suspended ballast. “It is always nice to watch meticulous preparation paying off and the client’s specifications from being implemented perfectly”, Lehner exclaims happily.

The Phyrn railway route did not have to be closed for the lifting job.

Concrete foundations were built for the bridge’s installation.

The crawler crane was equipped with a main boom 78 metres in length.

Thanks to meticulous preparation, the bridge could be lifted into place parallel to the Phyrn railway route and did not have to be lifted over it. This prevented a closure of the railway route.

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