Gschnitztal Bridge renovation on the Brenner Motorway
The Brenner Highway A13 in Tyrol forms the Austrian part of the Brenner Motorway. Built in the 1960s, it was one of the first mountain highways in the world. The A13 runs from the Innsbruck junction to the Italian state border at the Brenner Pass. This most important and, in terms of geological structure, most difficult to construct section of the European motorway from Munich to Modena leads to the Brenner Pass (actually "Brenner"), which, at an altitude of about 1350 m above sea level, is the lowest pass over the main ridge of the Alps and was already much used by the Romans.
In the course of the A 13, the Gschnitztal, a western side valley of the Tyrolean Wipptal, is spanned by the 674 m long Gschnitztal Bridge. This highway bridge underwent major renovation from the beginning of 2011 to the end of 2012.
For this, Teupe & Söhne Gerüstbau GmbH was awarded the contract for the complete scaffolding of the highway bridge for the performance of heavy corrosion protection work via its Austrian operating facility. The scaffold structure also had to be kept in place for concrete repair and drainage work on the superstructure. The extensive tasks, dictated by the scope of rehabilitation, required the erection of a dustproof and watertight enclosure including a watertight floor trough with drainage channels and pump sump integrated into the suspended scaffold structure.
Special logistics requirements had to be taken into account for the scaffolding work: Over a length of almost 700 m, the viaduct crosses, among other things, an alpine mountain cable car, various higher-level and lower-level roads, the Steinach River, and a ski slope. The special, alpine valley structure below the viaduct with extreme slopes in some bridge spans was another logistical challenge.
Teupe developed a scaffold concept with scaffold platform elements prepared in the workshop and prefabricated in terms of steel construction for the over 25 m wide superstructure. These reusable suspended scaffold segments could be retracted from bridge span to bridge span at the respective place of use in the course of the construction work by means of special lifting technology with cable winches in such a way that fast and economical suspended scaffold erection was possible. Depending on the geometric situation of the individual bridge spans, the individual, almost 13 m long platform elements were moved using horizontally and vertically operating cable winches, specially prepared platform hangers with all-terrain tractors and telescopic forklifts, in some cases also in the abutment area with mobile crane support.
The rehabilitation project was completed on schedule with high-quality scaffolding, including enclosure.
Teupe & Söhne Gerüstbau GmbHReferences
Innsbruck, Tyrol, Austria, Europe - Steinach am Brenner, Tyrol, Austria (1963)
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6294 - Published on:
27/05/2013 - Last updated on:
03/03/2023