Storstrøm Bridge
Vordingborg, Denmark
Adaptive formwork solutions secure construction progress on Denmark’s Storstrøm Bridge
With the construction of the new Storstrøm Bridge, Denmark is modernizing a key section of the Scandinavian road and rail network.
Doka has been supporting the Storstrøm Bridge project since 2019 across multiple phases. The scope included solutions for the approximately 80-meter-long approach bridge on both sides, onshore prefabricated pierheads, cantilever structures connecting the precast bridge segments to the pylon, as well as formwork for the pylon itself. To complete the overall setup, a tailor-made working platform was implemented to support the closing structural works of the cable-stayed bridge.
Building type
Cable-Stayed Bridge | Mast Pylon.
Challenge
Wind-resistant safety concept with stable platforms prepared for site equipment integration, combined with a flexible automatic climbing system adaptable to changing pylon geometry and supporting efficient multi-level operations, complemented by a dedicated platform for the safe installation and fixation of stay cables.
Solution
Fully enclosed platforms with wide stairways ensured safe and efficient access across all working areas, while the robust structure safely transferred the resulting loads. A flexible automatic climbing system, supported by a special climbing shoe, compensated for changing pylon geometry, while a dual-level rising solution enabled parallel operations on multiple levels.
Interior and exterior platforms were adapted to allow safe passage through blister zones and stay-cable ducts. Safe and comfortable working platform erected level by level using the modular Staxo100, complemented by two stair towers to enhance accessibility.
Engineering Excellence for Demanding Requirements
As the central supporting structure of this cable-stayed bridge, the 102 m pylon not only transfers all forces into the foundation but also features a highly complex design with variable geometry, integrated recesses, prefabricated boxouts, and casing pipes for the stay cables. By combining SKE100 plus for high loads and multi-level working areas with flexible SKE50 plus on the space-restricted sides, a cost-effective and efficient system was realized. A specially climbing shoe compensated for the progressive geometric changes during climbing, ensuring smooth platform adjustment to varying inclinations.A dual-level rise solution allowed parallel operations, reducing cycle times by enabling simultaneous concreting, curing, reinforcement works, and steel box installation.
Tailor-Made Working Platform for the Final Structural Operations
The closing stage of the cable-stayed bridge was supported by a tailor-made working platform that enabled the final operations of the project. Erected level by level using the Staxo 100 load-bearing tower, it rested on four stationary SKE100 plus and SKE50 plus climbing brackets, reusing the proven anchorage points from the pylon construction.
Two integrated stair towers ensured safe and comfortable access throughout all operations. Firmly connected to the pylon, the platform provided stable and reliable working conditions even under demanding wind and load requirements, successfully completing the pylon works and marking a key milestone in the overall construction sequence.
Aurelia Penza | Technical Manager | Itinera
„The Storstrøm Bridge Project demanded a formwork and shoring concept that could adapt precisely and easily to changing geometries while withstanding high wind loads. Doka’s engineering approach provided the stability and flexibility required to maintain a reliable construction sequence under continuously changing geometric conditions, particularly in the onshore environment“
Project data
Year of completion
2026
Country
Denmark
City
Vordingborg
Contractor
Itinera
Building data
Bridge length
3,830 m
Main span
320 m
Pylon height
102 m (mast 69 m)