In the course of the project Koralm railway the current bridge object crosses the Drau valley in the area of the Völkermarkt water reservoir.
As part of the future direct connection between Graz and Klagenfurt, the double-track bridge bearing structure is designed for a design speed of 250 km/h. The structure, which has a total length of approx. 600 m, consists of four single bearing structures with spans between 125 m and 200 m.
„ As core of the new Koralm railway line the Drau crossing stands out as an extraordinary ILM bridge! “
The bridge structure itself consists of a pre-stressed box girder cross section. The load transfer into the underground (foundation) was performed by classical deep foundation by large bored piles.
The bridge structure was constructed by means of incremental launching (insertion of the structure) where the four single bearing structures were monolithically connected by a temporary connection in the course of insertion. The single bearing structures were separated after the insertion procedure in the end position.