There are three viaducts along the Balaton as part of the M7 Motorway, with 5-8 of 40 m long spans. At each of these bridges the motorway crosses ca. 30 m deep valleys on two parallel carriageways.
The substructers are hollow section piers founded with dia 1,20 m bored piles. The superstructures were incrementally launched with steel noses. The parallel construction cables are grouted internal cables, while the additional cables for the final stage are unbounded external ones with double protection, led in the inner of the box girders on deflection saddles.
