Excursion

Linz Danube Bridge

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Voestbruecke

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Excursion-Description

Linz Danube Bridge

The old „Eisenbahnbrücke“ across the Danube was built in 1900 and will be substituted by the „Neue Donaubrücke Linz“. The design was developed to fit to the architecutre of the city of Linz as well as to the surrounding landscape. The bridge processes a very complex geometry and the shipping clearance will be increased to 100m.

The bridge has a total lenght of 396 m and is designed with a 2 lane carriageway, 2 tracks for the tram and a combined walk- and cyclist path on both sides. The overall width of the new bridge is 31,54 m plus 4 balconies with lengths of 33 m situated on both sides fo the middle arch and adding another 1,08 m to the width of the bridge.

The new superstructure is based on a composite bridge with a steel structure and a reinforced concrete slab. The concrete slab is supported on cross girders (distance e ~ 3,0 m) and has a thickness of 25 cm/33 cm. Prefabricated concrete slabs are provide as formworks to produce the deck plate.

The basic idea of the assembly is to preassemble two major structural elements parallel on the Danube‘s northern bank on a preassembly yard. The third major structural element will be assembled in its final position. After completion of the preassembly and corrosion protection works both major superstructure elements will be launched in a transverse direction and floated into their final position via pontoon units.

In the next construction step the concrete slab will be casted and in the final construction phase all bridge equipment (e.g. effect ligthing, handrails,…) will be finished.

Voestbruecke

The A 7 Mühlkreis motorway in Linz has carried traffic for around 40 years and is used by up to 100.000 vehicles each day. The second busiest road section in Austria has reached the end of its technical life.

Therefore in 2018 the construction of two additional bridges (“bypasses”) on the left and right of the existing Voest-Bridge did initiate the so-called “safety expansion of the A7 motorway”. This project represents one of the largest ASFINAG construction sites currently running.

In addition to the two Danube bridges a total of 18 new bridges (ramp structures) and numerous complex structures will be finished by June 2020 in order to connect the new bridges to the existing junctions to the left and right of the Danube.

 

Facts & Figures

 

Linz Danube Bridge

Voestbruecke

Length:

396,0m

289 m

Spans:

78,0 – 120,0 – 120,0 – 78,0 m

72,0 – 60,0 – 72,0 – 85,0 m

Width:

31,54 m

35,0 m

Client:

 Capital of Linz

ASFINAG Bau Management GmbH

Architect / Structural Engineers:

ARGE Planung NDL
Marc Mimram Architecte et Associés, Paris
Marc Mimram Ingénierie, Paris
KMP ZT-GmbH, Linz
ARGE Bernard Ingenieure (Hall/Tirol)
RWT plus (Vienna)
SOLID architecture

Contractor:

 ARGE Neue Donaubrücke Linz

MCE – PORR – STRABAG

ARGE A7 Vöestbrücke

Swietelsky Baugesellschaft m.b.H.

Bauunternehmung Granit Gesellschaft m.b.H.