Scope of the project
The aim of the project is to improve traffic arrangements in Raisio city centre to meet the requirements of the Trans-European Transport Network TEN-T. It also aims for improving the flow of traffic, road safety and local residents' living environment.
The project will be implemented in stages. Phase 1 construction work is to start in September 2026. The first phase will include building a road tunnel in the city centre, implementing street arrangements in the city centre, and upgrading E18 Turku Ring Road on the southwest side of Main road 8.
Conduits and equipment will additionally be transferred, which will be necessary in order to commission the first phase, and other necessary work will be carried out, including the construction of Petterinpellontie connection. The interchange of Turku Ring Road and Main road 8 will be built and other work of the second phase completed in later phases of the project.
In phase 1:
- Turku Ring Road will be upgraded along its current alignment over a distance of approx. 1.7 kilometres.
- At-grade intersections and traffic lights will be removed.
- The intersection north of Raisiontie and the intersection that connects Soliniuksenkuja to Turku Ring Road will be removed. A new Soliniuksenkatu intersection will be built to replace it.
- A road tunnel with concrete structure approx. 450 metres in length will be built in the centre of Raisio.
- An interchange leading to Raisio city centre will be built on the west side of the tunnel. The ramps of the interchange will be connected to the street network through roundabouts.
- As the at-grade intersections on the Ring Road are removed, extensive street arrangements will be implemented. Routes for pedestrians and cyclists will additionally be upgraded along the Ring Road and on the streets.
- Kirkkotie will be extended as part of the street arrangements in the city centre.
- A new Elauksenkatu street will be built to connect Opinpolku and Soliniuksenkatu over the tunnel.
- Muinaispellontie and its bridge will be built.
- Extensive noise abatement will be implemented by building a total of 3.8 kilometres of noise walls and barriers.
- Safety will be improved by installing traffic lights on the street network and providing routes with better lighting.
Goals in the later phases:
- Main road 8 upgrade over a distance of approx. 1.3. kilometres
- Interchange of Turku Ring Road and Main road 8.
- Extension of Keonkatu to Petterinpellontie.
- New Jokilaaksontie road to connect Voudinkatu and Haunistentie.
- Route via Muinaispellontie, Petterinpellontie and Vesilaitoksentie. This route will replace the current Petterinpelto at-grade intersection on the Ring Road.
Project costs
Based on the road plan approved in 2022, the project’s cost estimate is EUR 235 million.