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Wide Span Functional Bridge

Box Girder Bridge in Ijsselstein - NL


Contemporary functional stuctures acquired their character simply by dimensioning with wood. The innovative box girder design makes wide spans with low overall height possible, here 35 m length at about 1.20 m height. A decking of mastic asphalt creates the necessary roof for the large-sized prefabricated elements. Inside the box girders run invisibly external supply lines.

To increase the durability a cladding made of high quality western red cedar was retrofitted. Thus, the bridge protected on the top and sides – according to the current fee guidelines a lifetime of over 60 years can be expected. Recent studies indicate that protected timber bridges may have a much longer lifespan.

Dienst Landelijk Gebied

Year of construction

Length: 117,00 m
Width: 3,00 m

Several glulam beams form a box girder that carries the traffic load, mastic asphalt decking protects the timber structure, steel railings and glulam handrail

Our service
Design planning and detailed engineering (voorlopig ontwerp und definitief ontwerp) – Comparable to service phase 1 – 5 according to German HOAI

Other views of the bridge