Bergedorfer Strasse B5/A1 bridge
Replacement construction of a four-lane road bridge over the A1 interstate, BIM pilot project and implementation with moving road traffic
At the Hamburg-Billstedt junction on the A1 interstate, a bridge built in 1960 was demolished and replaced by a new structure. Up to 100,000 vehicles a day use the B5 Bergedorfer Strasse, which crosses the A1 interstate with two lanes in each direction at this point. The existing two-span structure was designed as a prestressed box girder bridge and, after 60 years of use, showed considerable damage.
The new two-span bridge was designed as a steel composite superstructure and rests on a flat-founded central column. The use of prefabricated composite girders allowed construction time to be optimised. Construction was carried out in four sections, with half-sided construction ensuring continuous traffic on the main road. The southern section was demolished and then rebuilt. This process was repeated for the northern section. This resulted in four closures of the motorway. Close coordination with the road designers was crucial in planning the construction process.
This challenging task was a BIM pilot project of the German Federal Ministry of Transport and Digital Infrastructure (BMVI) as part of the implementation of the "Digital Planning and Construction Phasing Plan". It was carried out as an open BIM with the planning participants throughout the entire process. The BIM use cases applied included as-built survey, variant analysis, visualisation, coordination of trades, logistics planning, 2D plan derivation, quantity takeoff and 4D scheduling.
Client | Freie und Hansestadt Hamburg, Landesbetrieb Straßen, Brücken und Gewässer |
Project data | Total length: 46 m, Max. span: 23 m, Year of construction: 1956/1960 |
Location | Hamburg |
Completion | 2021 |
Demolition planning
Project design
Structural design
then simply send an email to: info@wtm-engineers.de