| 01 : 45 – 14 November 2019 |
A bridge over Dřetovice stream in Vrapice village of Czech Republic was cast in ultra-high performance concrete.
Weighing around 3.5 tones, the 1.5 meter wide pedestrian bridge is located on a trail which leads to the village cemetery. Often flooded, the wilderness around the stream and its geographical importance makes the location unique. Designed by Aoc Architects in collaboration with Klokner Institute of Prague, the structure is a great combination of design and engineering.
Double curved geometry spans over the stream
Based on the concept of a ‘portal’ connecting the living and dead world on either end, the bridge has a striking geometry. Cast in Ultra-high performance reinforced concrete, the structure is lightweight, a prototype was built to test loading capacities. Based on Baroque style, one can find a sculpture called “The Guardian’ crafted by Prof. Jan Hendrych opposite to the bridge.
Sculpture on opposite side of the bridge
From the designers –
The bridge over the Dřetovice stream in Vrapice, near the city of Kladno, is located on a pedestrian trail that leads from the village to the cemetery. It is set in a remarkable natural context that, in a way, compensates for the urbanized public space of the village.
Aerial view of the bridge over the stream in Vrapice
The landscape around Vrapice is also geologically very interesting with findings such as fossilized shark teeth. The meadow around the bridge was often flooded and its immediate surrounding is characterized by both systematic human interventions and relative wilderness defined by constant changes due to the floods.
Amongst the wilderness, stands the bridge !
Concept of the bridge –
The concept of the bridge bears a higher meaning; it is a magical portal between the world of the living and the dead, or a numinous object from the Space Odyssey. The unique architectural design explores the limits of light weightness and subtlety of a pedestrian bridge, artistically based on the mesmerizing black and extremely technologically advanced material.
Pedestrian bridge made from UHPC
The bridge is made from freeze-resistant ultra-high performance concrete (UHPC), grade C110/130, fiber-reinforced. Structural solution of the 10 m span and 0.4 m camber adequately lies in the double-curved geometry of the bridge.
Dimension details of the bridge
This stabilizes the construction in both main directions and allows easy bracing of the bridge. With 1.5 m width in the cross section and 1.4 m3 of material used for building it, the bridge weights approx. 3.5 tons.
During the verification of the structural design and the concrete casting technology, a prototype was built and subjected to load testing.
Pigment was added into the concrete mixture, surface patina etched and the key details hand sanded.
Sculpture opposite the bridge : The Guardian –
Opposite to the bridge is “The Guardian”, a sculpture from the atelier of Prof. Jan Hendrych. Among other things, sculptor Hendrych is a leading expert on Baroque sculptures placed in the context of bridges and landscapes and on their plastic modelling.
Sculpture by Prof. Jan Hendrych
The sculpture is based on the original Baroque archetypes (e.g. John of Nepomuk). It is placed in the landscape set-up completing the entire spatial composition of the bridge.
Sculpture made of similar material of the bridge
One of the main compositional themes is also the concept of the bridge as a plinth or a spatial context for the sculpture, made of a material analogous to that of the bridge.
Portal between life and death !
Project details –
Project name – Bridge over the Dřetovice stream
Location – Kladno – Vrapice, Czech Republic
Designers – Ondřej Císler, Petr Tej
Project type – Infrastructure
Client name – The City of Kladno
Completion – 2019 | Area – 19.50 sq. mts. | Cost – ca. 27 000 €
Photography Credits – © BoysPlayNice photography
Author of the sculpture – Jan Hendrych
Casting technology – Jiří Kolísko | www.klok.cvut.cz
Bridge manufacture – KŠ Prefa | www.ksprefa.cz
Product/Material details –
Structure of bridge – UHPFRC concrete (Ultra-high performance reinforced concrete)