Civil Engineering for bridge refurbishment
December 17, 2020 | Gabriela Mayer
The 50 metre long bridge was built in 1964 to connect the B137 regional highway where Innviertler Straße and Andorfer Straße meet. Due to initial abutment settlements and the resulting structural deformations, the carriageway crossings were damaged and had to be renovated several times in the past.
Renovation and asphalting works
In order to make the connection to the road embankment as robust as possible, Felbermayr Technical Civil Engineering was responsible for the fresh rebuild of the structural ends - including the implementation of transition slabs for a proper transition to the main roads.
The entire road surface, the bridge sealing, both edge beams including bridge equipment as well as parts of the end cross girder were renewed on the almost eleven metre wide bridge. To protect the pre-stressed existing structure, the necessary removal work was partly carried out using high-pressure water jets. This required the formation of dustproof and watertight working scaffolds. The civil engineering specialists also undertook the concrete renovations on the underside of the supporting structure. 20-ton excavators, work platforms and smaller construction machines were used for this.
The planned renovation and construction measures were carried out during a traffic closure of the B137 in a construction period of two months. For this purpose, road traffic was diverted to the on and off ramps of the junction during the entire construction period. The work was carried out on behalf of the province of Upper Austria.
