The Ravelijn Bridge

RO&AD Architecten completed a pedestrian bridge to connect the fortress-island of Ravelijn “Op den Zoom” to the city of Bergen op Zoom, in The Netherlands, using the principles of the Cradle to Cradle philosophy.

The Ravelijn “Op den Zoom” is a fortress-island of the city of Bergen op Zoom in The Netherlands which is made in the beginning of the 18th century by Menno van Coehoorn, a famous fortress builder.

This is the only “ravelijn” of him still present. The fortress was originally only accessible by boat, so supplies and soldiers had to be rowed the 80 meters to the fortress. The original entrance is still present just above the waterline At the end of the 19th century the fortress lost its defensive function. In 1930 a raised wooden bridge was added. Nowadays the island-fortress is mainly used for small public and private events.

The assignment was to make a second pedestrian bridge for two reasons. First to connect the fortress to the city centre, second to make a second escape route from the fortress in case of emergencies.

In former days, the Ravelijn was supplied from the city with small rowing boats. The concept of the bridge is, to let the bridge follow the original track of these boats, so the bridge echoes the former route the boats followed from the city to the fortress. That is why the bridge snakes across the water to the fortress. Therefore the bridge is also floating. An additional advantage of that is, that in winter the bridge can be pulled to the side, so there can be ice-skated around the fortress. The deck of the bridge is convex to let the bridge blend in with the water and the surroundings. No mirror image in the water and as close to the water as possible. The stairs at the jetty near the fortress can move up and down (and stay horizontal) with the water level.

RO&AD Architecten,The Ravelijn Bridge, Bergen op Zoom, Middelburg, The Netherlands. Photo Erik Stekelenburg — RO&AD Architecten, The Ravelijn Bridge, Bergen op Zoom, Middelburg, The Netherlands. Photo Erik Stekelenburg

The bridge is made completely to the principles of the Cradle to Cradle philosophy. Air-filled polyethylene pipes positioned underneath the timber surface help keep the bridge afloat, without requiring any additional structural framework. The decking is made of Accoya, a high-performance wood product, which is treated to improve its ability to resist fungal decay, and the effect of swelling and shrinkage that could result from its proximity to water. In the future the bridge can be easily disassembled and recycled.

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Brug Ravelijn Bergen op Zoom

RO&AD Architecten, The Ravelijn Bridge, Bergen op Zoom, Middelburg, The Netherlands. Photo Erik Stekelenburg

Brug Ravelijn Bergen op Zoom

RO&AD Architecten, The Ravelijn Bridge, Bergen op Zoom, Middelburg, The Netherlands. Photo Erik Stekelenburg

RO&AD Architecten, The Ravelijn Bridge, Bergen op Zoom, Middelburg, The Netherlands. Photo RO&AD Architecten

RO&AD Architecten, The Ravelijn Bridge, Bergen op Zoom, Middelburg, The Netherlands. Photo RO&AD Architecten

RO&AD Architecten, The Ravelijn Bridge, Bergen op Zoom, Middelburg, The Netherlands. Photo RO&AD Architecten

RO&AD Architecten, The Ravelijn Bridge, Bergen op Zoom, Middelburg, The Netherlands. Photo RO&AD Architecten

Map of Ravelijn in 1814

Picture of Ravelijn in 1930

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RO&AD Architecten, The Ravelijn Bridge, Bergen op Zoom, Middelburg, The Netherlands. Plan

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RO&AD Architecten, The Ravelijn Bridge, Bergen op Zoom, Middelburg, The Netherlands. Moving sttairs

RO&AD Architecten, The Ravelijn Bridge, Bergen op Zoom, Middelburg, The Netherlands. Sketch

The Ravelijn Bridge, Bergen op Zoom, Middelburg, The Netherlands
Program: pedestrian bridge
Architect: RO&AD Architecten
Design team: Ro Koster, Ad Kil, Martin van Overveld
Commisioner: City Council of Bergen op Zoom
Structural Engineer: W2N Engineers
Contractor: Allflex
Total length: 80 meters
Completion: March 2014

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The Ravelijn Bridge

RO&AD Architecten completed a pedestrian bridge to connect the fortress-island of Ravelijn “Op den Zoom” to the city of Bergen op Zoom, in The Netherlands, using the principles of the Cradle to Cradle philosophy.

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Brug Ravelijn Bergen op Zoom

Brug Ravelijn Bergen op Zoom

C:\Users\Gebruiker\Documents\220Ravelijn\Omgevingsvergunning\brug_situatie situatie zomer (1)

E:\ROAD\220Ravelijn\doorsnede_brug_6 overzicht (1)

Seamless design, ECLISSE steps outdoors

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