Substitute Bridge near Erlangen

Replacement Overpass above Highway A3

Client: Free State Bavaria/Highway direction North Bavaria

Year of Construction: 2017

Contractor: Schaffitzel Holzindustrie GmbH+Co.KG

Length: 90,00 m; two fields of 45.00
Width: 3,00 m

Construction: Two trough bridges, each with four double pitch roof beams with a horizontal glulam beam as roadway. Loads like pedestrian and cycle path bridge with consideration of a service car up to 6to.

Our services: Design and structural analysis of the superstructure


The two substitute bridges over the A3 near Erlangen were able to assert themselves as an alternative to standardized steel replacement bridges. U-shaped steel frames, which serve to tilt the main girders, lie on both sides between the up to 2.05 m high double pitch roof beams, which allow a free span of 44.30 m. A wind bracing of round steel diagonal between the U-shaped steel frame serves to stiffen the bridge. In addition, a lying glued laminated timber beam is used as a roadway. This is coated slip-resistant. The service life of the bridges is limited to two years, which is why the constructive wood protection is omitted for economic reasons.

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