Bridge across the Tiefenbach Valley: Launching of the Superstructure
In the course of the widening of Highway A61 up to six lanes between the Rheinböllen interchange and the Service & Rest Area Hunsrück the 5th launching step of the new superstructure was carried out on 29 and 30 June 2020.
After completion, the bridge with spans of up to 80 m will cross the Tiefenbach Valley at a height of 90 m. The steel-composite superstructure with a total length of 368 m consists of two closed steel box girders with dimensions of approx. 2,5 x 3,5 m, which will be fixed to the reinforced concrete slab. The reinforced concrete piers with a height up to 85 m are founded on large-diameter bored piles except of the short pier in axis 4 that is designed as hollow pier. The dismantling of the launching nose and the final launch towards the eastern abutment is expected to take 6 weeks. The 18 m wide roadway slab will then be cast by the pilgrim step method using a formwork traveler. Completion of the northern bridge part scheduled for mid 2021. Afterwards, the old bridge will be dismantled and the second, southern bridge be onstructed.
Landesbetrieb Mobilität Bad Kreuznach
Activity by LAP
Basic and tender design
Independent Checking of the detailed design of the steel-composite superstructure including the temporary structures for the longitudinal shifting / launching and concreting of the roadway slab
Checking engineer: Rico Stockmann - LAP Prüf- und Sachverständigen GmbH