Kreate Oy and the Finnish Transport Infrastructure Agency have signed a contract to start the implementation stage of the Road 132 Klaukkala bypass project. This also concludes a development stage in which move cost-efficient and technically improved solutions were created to complete the project. Construction will begin in February 2019, with the job due for completion in autumn 2021.
The plan and implement (PI) contract model for the Klaukkala bypass was divided into a development stage and an optional implementation stage, for which a contract was signed on 21 December 2018. At the end of the development stage, Kreate provided the Finnish Transport Infrastructure Agency with a preliminary construction plan, which will be updated as the construction proceeds.
“Although the development stage is now over, we will continue to innovate together during the implementation. We developed some excellent solutions that resulted in cost savings, and improved the project’s schedule and mass haul optimisation management and technical solutions. We will, for example, optimise bridge types and spans,” says Sami Laakso, a Kreate project manager.
Quarried rock material given new lease of life in roadbed
The Road 132 Klaukkala bypass will improve local traffic conditions and enable land use development in the Klaukkala urban area and environs. Once completed, the new bypass will run through large rocks, most of which are located near the flyover junctions of Kirkkotie, Lamminsuo, Luhtajoki and Metsäkylä.
The contract involved a considerable amount of soil cutting and rock quarrying, and the original plan was to drive this earth material away via the street and road network. As a result of Kreate’s innovation, the earth material was reduced to a minimum and all of it was ultimately utilised in construction.
“We will use any material quarried in the Klaukkala bypass to build the road structure and embankments, because – contrary to the original road plan – we suggested that the road be raised in places by up to 3 metres. This will ensure that no rock material or soil has to be taken away from the site, meaning that the environmental impact will be significantly lower. All in all, the solution will not only reduce the environmental impacts, but it will also reduce traffic congestion, use of virgin materials and costs,” says Mr Laakso.
During the development stage, a decision was also made to reinforce soft points with alternative materials and methods.
“We will use not only foam glass and expanded clay, but also innovative and exceptional recycled materials, reducing the amount of virgin materials in infrastructure construction and providing a circular economy solution,” says Laakso.
Extensive contract includes roads and motorway junctions
A bypass round the Klaukkala urban area will be built between Main road 3 and road 132. The new eight-kilometre road will be a single carriageway. Flyover junctions will be built for Kirkkotie, Luhtajoentie, road 130 and Main road 3, with any necessary additional road and street arrangements. The area’s pedestrian and cyclist routes and arrangements for public-transport stops will be improved. Acoustic screening will also be built along the bypass.
Demanding quarrying will occur around the motorway. The Lamminsuo flyover running over Main road 3, which is 110 metres long, is technically difficult owing to the busy motorway. Indeed, the project’s most visible landmark for motorists will be the construction of the Lamminsuo flyover.
Kreate’s Transport Infrastructure, Bridge and Foundation Construction units will participate in the Klaukkala bypass project. Commissioned by the Finnish Transport Infrastructure Agency, the project is worth 34 million euros, of which Kreate accounts for around 25 million euros.
From left to right: Juha Oksanen, Nurmijärvi municipality, Timo Vikström, Kreate Oy, Sami Laakso, Kreate Oy, Antti Koski, Finnish Transport Infrastructure Agency and Pekka Petäjäniemi, Finnish Transport Infrastructure Agency.
Photo: Ilmari Sikander, Rakennuttajatoimisto HTJ Oy