Construction period: 2007 – 10.2010
Location: Traismauer, Lower Austria
ALPINE constructs the contract section “Large Bridges” that consists of the Foreshore Bridge South (330 m), the 360 m long bridge across the river Danube and the Foreshore Bridge North (460 m) as part of the connection of “S33 Kremser dual carriageway” in the south with “S5 Stockerauer dual carriageway” in the north.
The Foreshore Bridge South (actually the feeder to the actual bridge across the river Danube) consists of 10 sections with a max. single span of 35 m. The 13-section Foreshore Bridge North also has a standard span of 35 m. However, the section across the river Krems has a span of 45 m. The foundation of both bridges consists of large bore piles DM 120, a pile foundation grill on top of it and cylindrical columns of up to 15 m height. Formwork carriages are used for the construction (in sections) of the girders.
The heart of the entire contract section “Large Bridges” doubtlessly is the bridge across the river Danube with a total length of 360.00 m and single spans of 100, 160 and 100 m. Both bridge columns are being constructed close to the bank of the river. During construction they “hang” on a support structure that sits on two pontoons. Once built they are being transported to the columns location in the river and lowered to the ground in the 13 m deep water. The bore-pile builders will then construct during day and night shifts 48 bore piles for every column, about 40 m in length. A 90 m long pontoon ship is used as a control centre and to provide all the material needed. It will sit across the river and a bridge will connect it to the river bank. The girders will be constructed using the cantilever method of construction, starting at the hammer heads and advancing at a maximum length of 5.20 m per section.
Foreshore Bridge North: 460 m
Bridge across river: 360 m
Foreshore Bridge South: 330 m
Piles: 13,000 m
Construction concrete: 55,000 m³
Reinforcement: 7,000 tons
Internal pre-stressing steel: 621 tons
External pre-stressing steel: 170 tons
Sealing: 36,000 m²