Structural Steel Plates 

The strongest solution for large bridges and tunnels 

UltraCor® is the world’s largest and strongest corrugated steel structure that earned a Guinness World Record for its wide span. Frequently used for bridges, tunnels, and grade separations, it combines the advantages of lightweight construction with enormous load-bearing capacity. UltraCor® is durable, eco-friendly and easy to install. 

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Helen Tomey
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Features and Benefits

The widest span

The width of over 30 metres is available for these structures. A bridge made of the UltraCor® steel plates earned a Guinness World Record for being the world’s largest metal buried bridge with a span of 32.39 metres. 

High load capacity

UltraCor® structures are suitable for any class of live loads adapted for your needs. They can withstand the weight of people, cars, trucks, and railroads. 

Fast and simple installation

A bridge of 100×20 m can be assembled in just 3 weeks. The lightweight structures are assembled like a puzzle with a team of one trained supervisor and regular workers. The installation requires only one crane and some basic tools.

Suitable for extreme temperatures

From the far north of Sweden to the scorching heat in Egypt, the structures can be installed both at -50°C and at +50°C. 

Long service life

The steel of UltraCor® structures is basically protected against corrosion by hot dip galvanizing. Depending on the environment (aggressiveness of water, air and backfill), we design accurate corrosion protection, including painting system if necessary. It ensures a long service life of 100-120 years.


Steel is 100% recyclable and uses several times fewer natural resources to be produced than concrete. The quick installation process ensures minimal pollution and environmental disturbance. 

UltraCor® Properties 
  • Span: over 30 m 

  • Load capacity: very high, can withstand any live load classes  

  • Corrugation profile: 500 mm pitch and 237 mm depth 

  • Steel grade: up to 500 MPa (Re) 

  • Stockpile height: over 30 m 

  • Material: hot dip galvanized steel  

  • Painting system/corrosion protection: accurate, depends on the class of the environment aggressiveness 

  • Available shapes: cyclical or elliptical arch (open profile) 

  • Certification: CE Certificate according to norm EN 1090-1, ISO 

  • Bridges and tunnels 

  • Grade separations 

  • Road or rail overpasses  

  • Stockpile conveyor tunnels  

  • Portals 

  • Shelters 

  • Others 

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    How are UltraCor® structures different from other ViaCon bridge solutions?

    They have the deepest corrugation and thanks to this can be built as arch with span over 30m that is not possible by use of other corrugated steel structures”. UltraCor® is better solution then SuperCor or MP200, when we need to cross river, road or railway 30m or more wide, with just one arch.

    Optimal solutions for railway bridges and road infrastructure

    For railway and road infrastructure, the selection of structural components plays a vital role in ensuring longevity, resilience, and safety. Structural steel plates, such as UltraCor®, stand as a preferred choice for constructing sturdy railway bridges, road bridges, and tunnel pipes, offering strength and durability.

    Tailored to withstand significant loads and adverse environmental conditions, UltraCor® serves as a dependable option for railway and road bridges, as well as grade separations. With its robust load-bearing capacity and expansive span capabilities, UltraCor® ensures the reliability and resilience required for transportation infrastructure projects.

    UltraCor offers a robust, durable and eco-friendly choice for railway and road bridges. Its extensive span capabilities,load-bearing capacity, and sustainable design make it a preferred option for engineers and contractors seeking dependable and environmentally responsible solutions for transportation infrastructure.

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