Schiffarth, DE

Timber-concrete composite bridge
Rhein Sieg Kreis
Ingenieurbüro Miebach, Lohmar
Structural analysis:
Schaffitzel Holzindustrie
Schaffitzel Holzindustrie
Year of construciton:

Technical data

Main structure is consisting of block-laminated spruce glulam with timber-concrete composite connectors. The main carrier has a stepped cross-section and the concrete slab was made with mastic asphalt and steel railing.
40,00 x 4,75 m
Our role:
Work planning, project management and execution

Special features

Due to a large number of flood damages, it was decided to rebuild the Agger-bridge. The new bridge cannot be damaged easily by floods, because it has two columns from the shore, and the timber structure is set very high. A clever anchoring system on the end supports provides a reduction of the cross section in the centre field.
This bridge is a convincing combination of concrete and timber that is not only ecological, but blends into the scenery, too. In this bridge were installed 112 m3 of timber. This corresponds to storage of 112 t of CO2. The combination with concrete fills the construction with a load-bearing capacity that supports also heavy vehicle traffic. Furthermore, the concrete gives a perfect design protection to the timber, which at least redoubles the working life.