Arch bridge KASI and KASI-BOX 

KASI bridges have been made for 30 years!

Arch bridge KASI is a pedestrian and bicycle underpass build with precast concrete foundations and steel arches, which makes efficient use of space. Concrete foundations are two or three meters long, ready-to-install elements. At the ends of the bridge, either straight or oblique wing walls can be installed. You can find information about other end solutions in our Holvisilta brochures.

The arch bridge has a prefabricated structure, which makes its installation quick and cost-effective. The arc part is made of hot-dip galvanized steel up to 4,6 meters in span. Larger spans are realized by the multi-plate structure. Arc parts can be equipped at the factory with LED lamps and painted in the desired color tone. The concrete part is also available with washing concrete, different color options or special patterns.

The KASI-BOX structure differs from the KASI structure only in the BOX shape of the steel arch. The equipment can be implemented in the same way as in KASI.

The BOX shape enables a shallow overall structure and provides the overall structure with a spacious solution that makes good use of the passage space, and the necessary opening requirement is achieved efficiently.

Contact us

Sales representative
+558 2566 587

Sales representative
+558 2566 587

Features and Benefits

Quick and easy installation

Installation is possible even in a few days. 

Suitable for temperature extremes

Severe weather conditions are not a problem for these structures. The temperature range of the installation is -50–+50 °C, so the pipe bridge can be installed as well in the frost of Lapland as in the scorching heat of Morocco. 

Long service life

The steel is protected from corrosion by hot-dip galvanizing and, if necessary, is additionally protected by various coatings. 

Almost maintenance-free

When installed professionally, structures do not require special maintenance.  

Resistance to corrosive environments

The secret to the long life of the structure is the adapted hot-dip galvanizing and additional coating. We can design the structure for all categories of conditions to withstand both the urban environment and seawater. Bridges are always dimensioned on a case-by-case basis according to the current Putkisilta guidelines.  

  • Span measurement: see below. brochure 

  • Load capacity: suitable for traffic loads 

  • Aaltoprofiili: 200 x 55 mm  

  • Steel grade: from 235 MPa (Re) 

  • Material: hot-dip galvanized steel 

  • Painting/corrosion protection: by condition class 

  • Available shapes: arc, box 

  • Approval: CE approval according to EN 1090-1, ISO 9001-2015 

  • Alikulkusillat 

  • Vesistösillat 

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