Rehabilitation of the A14 Mulde Bridge, Sachsen
With construction of a new autobahn bridge close by
Construction of the original Mulde Bridge was completed in 1970, together with the A14 autobahn on which it is located. The bridge, which has a total length of 342 m, showed signs of damage and deterioration which required various repair measures to be implemented. Inros Lackner was appointed to provide various planning and design services on the basis of a feasibility study – among other things, in relation to the construction of the new bridge and the repair and strengthening of the south superstructure of the existing bridge. One particular challenge was presented by the applicable conservation requirements, because the bridges cross very sensitive areas including a bird and nature protection area.
Strengthening of existing six-span structure
- Span lengths: 41.9 – 3 x 56.8 – 71.5 – 57 = 340.8 m
- Composite superstructure / Precast prestressed concrete
Construction of alternative five-span structure
- Span lengths: 52 – 65 – 75 – 106.5 – 62.5 = 361 m
- Height above valley floor: approx. 30 m
- Construction type: Composite box girder
- Standard section: RQ 31 b
- Width between railings: 31.30 m