bnr-kirjalansalmi-rakennussuunnitelma
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  4. Kirjalansalmi Bridge

Kirjalansalmi Bridge

WSP has prepared the general and construction plans for the Kirjalansalmi Bridge as well as the road plans for the Kirjalansalmi and Hessundinsalmi bridges. The new bridges will provide smooth and safe traffic flow for all road users.

Client

  • Väylä

Project status

  • Ongoing

The renovations of the Kirjalansalmi and Hessundinsalmi bridges aim to improve road connections for industrial companies and create a pleasant and safe route to the archipelago for all road users. This means replacing both current bridges and improving the roads and access. Construction of the bridges is scheduled to be completed between 2024 and 2025, after which the old bridges will be dismantled.

WSP in Finland was responsible for the general, road and construction design of the Kirjalansalmi Bridge and for the road design of the Hessundinsalmi Bridge. In addition, we designed the installation process and the necessary temporary structures for the bridge over the Kirjalansalmi Strait together with the steelwork supplier SGP.

Smooth connections to the archipelago

The new Kirjalalansalmi Bridge will be a composite girder cable-stayed bridge. It will consist of two high-pylon girders, which will support the main span of the bridge, which is about 250 m long, by means of diagonal cables. When completed, the span will be the largest in Finland.

The bridge in figures

Width
16 m
Main span
250 m
Length
675 m

A wider bridge deck, new lane arrangements at the junctions and two underpass tunnels for cyclists and pedestrians will make travel faster and safer for all road users in the future. Accessibility to public transport will also be improved with new bus stops and connections. In addition, the construction of new noise barriers near both bridges will enhance the residential amenity impact.

An attractive bridge that blends in with the surrounding nature

Kirjalansalmi Bridge has been designed with the environment in mind. The restrained design is supported by lighting that accentuates it. In addition, the bridge’s noise barriers are made of transparent material to preserve the integrity of the landscape.

The old bridge will be demolished once the new one is completed. The aim is to restore the bridge and roadbeds to their natural state and enliven the maritime landscape with trees and greenery. The existing bridge has an embankment that is about 300 m long, which can be dismantled when the new bridge is completed, thereby improving the flow conditions of the watercourse.

The new bridge will be built next to the old one (May 2024)