The replacement of the road bridges no. 57, 57A and 57b in the course of the K 9 is to be supervised by the construction supervision / construction supervision and SiGeKo. As part of the construction work, all superstructures and the power plant pillars, the pier and all pillars of bridge 57b are to be replaced and the fortress reinforced.

There are SiGeKo / construction supervision and construction supervision services for the replacement of the road bridges 57 in the course of the K 9 at Weser km 239,404 to provide.