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of

Bridges

130m concrete bridge connects Vltava River’s largest island to land

Petr Tej, Marek Blank and Jan Mourek designed the 130m long ultra-high performance fiber reinforced concrete footbridge in Lužec nad Vltavou

by Georgina Johnston 04 June 2021 Metal in architecture

The construction runs across the river flow between the villages of Lužec nad Vltavou and Bukol and is on the long distance north-south cycle route EuroVelo 7 leading from Sweden to Sicily.

The architectural design is based on the lightness and subtlety that are made possible by the technologically extremely advanced material ultra-high performance fiber reinforced concrete (UHPFRC).

The footbridge was conceived as a suspended structure with one pylon and two fields with spans of 30 m and 100 m. The main field crosses the river with a width of 70 m. The bridge deck is led in a high-rise arch with a radius of 777 m and is composed of directly walking prefabricated segments from UHPFRC. The hinges consist of 17 pairs of locked steel ropes.

The bridge deck was mounted on the fixed ring above the banks, the part above the river was mounted as a free cantilever, and the bridge deck is connected with two free cables.

All elements of the structure are unified and dematerialised by tones of medium gray colour. The footbridge is connected with the landscape by a newly planted oak alley along the road on the Bukol side; the oak trees will grow to the height of the pylon. 


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