Arch Bridge Crossing Autobahn 4

Pedestrian and Cycle bridge "Jägerstieg" in Erfurt

Client: Motorway authority Thüringen

Year of construction: 2003

Design: Krebs und Kiefer

Span: 77,70 m
Arch lenght: 56,70 m
Width: 2,50 m

Structure: Three-hinged arch made of larch glulam, upper side protected from weathering with zinc sheeting. Mastic asphalt decking.

Our services: consultancy timber structure, execution planning, structure planning


The Jägerstieg across the A4 is a so called "true arch bridge", without any additional tension bands between the supports. The curved main beams are made of glulam. This construction allows a span across the complete motorway without any supports in the middle. For the assembly the highway only had to be closed for a few hours. The Jägerstieg is similiar to the first timber bridge over the A4 that was built 2 years before. The bridge fits perfectly in the area which is marked by forests. Not without reason the bridge was recognized and has earned a Thüringen Holzbaupreises reward.