Engineering bridge dampers to overcome vibration on the Öresund Bridge
Learn how Lesjöfors engineered a bridge damper solution to overcome vibrations on the longest combined road and rail bridge in Europe.
Project overview: Öresund Bridge dampers
The Öresund Bridge is a rail and road bridge across the Öresund Strait between Sweden and Denmark. In certain wind and temperature conditions, the cables on the suspension bridge would vibrate, which was felt by road users.
Engineers were concerned about the long-term effect of these vibrations on the wider bridge infrastructure, including structural strength and durability. To address the issue, the main contractor turned to Lesjöfors. The task was clear – design bridge dampers using a custom compression spring solution to reduce vibration and support long-term infrastructure performance.
Design criteria: Bridge dampers for vibration control
What was the brief?
We were tasked with creating a bridge damper solution to control and reduce large vibrations affecting road users on the combined rail and road bridge spanning the Öresund Strait.
What makes the project special?
Multiple teams across Lesjöfors analyzed the issue, and through iterative testing, validation, and refinement, we developed a solution to address the most exposed suspension cables.
The project required precision engineering for a safety-critical application, where long-term performance and reliability were essential. It was an honor to work on such an architectural icon.
What did Lesjöfors do?
The bridge dampers we developed consisted of a sealed tube housing a high-performance compression spring, along with carefully engineered internal components.
The compression spring supported a movable piston-shaped weight, combined with an adjustable control ring. This ring was used to regulate airflow on either side of the piston, allowing fine-tuned vibration control for each cable.
The dampers were installed in pairs at the center of the cables. Two units were equipped with laser gauges, enabling continuous monitoring and accurate registration of piston movement during operation.
What challenges did Lesjöfors overcome?
Managing vibration on Europe’s longest combined road and rail bridge, which is under constantly changing wind and temperature conditions, presented a significant engineering challenge.
By applying custom bridge spring design and damper expertise, the Lesjöfors team delivered a solution that stabilizes cable movement and supports long-term bridge infrastructure performance. It also means that road users can enjoy a smoother ride across one of the most beautiful bridges in Europe.
What our clients say
Manufacturing bridge dampers
When it comes to design, engineering and manufacturing of custom compression springs, Lesjöfors operates multiple specialist facilities across the world and is a leader in its field.
Advanced CNC coiling facilities across our infrastructure, manufacture hot and cold coil compression springs up to 80 mm wire diameter.
Engineering bridge dampers: a multi-team project
Working closely with the main contractor, we coordinated engineering, testing, and manufacturing activities across the project to ensure the spring solution was delivered as specified and within the required timeframe.
The result was a successful cross-functional collaboration spanning multiple departments.
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