PLENTIFUL RESOURCES A STRENGTH IN GIANT BRIDGE RENOVATIONS

During the past year, FSP has carried out several demanding surface treatment projects for large bridges. Among the project sites are the Ounaskoski railway and roadway bridge In Rovaniemi, the Vårdö roadway bridge in Åland, the Friitala roadway bridge in Ulvila, and the Kraaselinsalmi railway bridge in Kemi.

One of FSP’s heaviest bridge projects this year was a concrete-decked steel-frame beam bridge connecting the Vårdö and Mickelsö islands, built right next to the old decommissioned bridge.

 

”We have been given notable and wide responsibilities concerning the surface treatment of bridges all over Finland. Our strengths have been our strong references, competitiveness and resources, which have enabled the realisation of extensive multi-stage surface treatment contracts,” says Project Manager Pasi Kovalainen of FSP.

Surface treatment capabilities are enhanced in particular by FSP’s professional project staff and modern transportable equipment, which can be deployed quickly to any location specified by the customer, regardless of time or place. Surface treatments are always carried out in the best way possible, according to the site’s quality requirements and specifications.

In the autumn of 2018, FSP realised one of the year’s heaviest bridge projects in Vårdö, which is a municipality in the archipelago of Åland with less than 500 residents. The project target was a concrete-decked steel-frame beam bridge connecting the Vårdö and Mickelsö islands, built right next to the old decommissioned bridge. The concrete deck of the old bridge was in such a bad shape that renovation was ruled out of the question.

The main contractor, Graniittirakennus Kallio, had already begun the sizable waterway bridge project in early 2017. The demanding project has progressed rapidly stage by stage. Indicative of the size of the project is the fact that the total weight of the steel components used in the 340-metre bridge is 800 tonnes.

Ruukki Construction Oy was responsible for the delivery and installation of the steel structures, transporting the steel segments by sea from mainland Finland and lifting them into place with a sea crane. Most of the segment welding was done at the Ruukki Ylivieska plant in Western Finland, and the rest at the port of Rauma.

 

AN INNOVATIVE BRIDGE PAINTING PLATFORM

Ruukki chose FSP as their partner for the sur- face treatment of the steel bridge segments whose task was to paint the segments at Rau- ma port and on site in Vårdö. According to Project Manager Timo Raitila of Ruukki, FSP has been a reliable partner for a long time. He thinks that FSP’s strengths are quality, flexibility, and observing agreed schedules. He also emphasises FSP’s environmental awareness and innovative approach to bridge projects.

”FSP utilised a bridge painting platform which made the surface treatment run smoothly over the waterways. Our cooperation was smooth and close team-play,” says Raitila.

The bridge project was done over water, which meant that environmental protection was a key factor. All sandblasting waste was collected to keep it from spreading into the environment nearby.

The steel beams for the Vårdö bridge were durably treated by a multiple layer system, which will give them a lifespan of several decades without additional maintenance, even in seaside conditions. There were five 60 to 70 metre-long beams, each weighing over 200 tonnes. The new Vårdö bridge is scheduled for commissioning by the end of 2018.

 

RELIABILITY, COMPETITIVENESS, AND PROFESSIONAL EXPERTISE

The other notable surface treatment project in autumn 2018 took place in Western Finland, at the Friitala road- way bridge crossing the Kokemäenjoki river in Ulvila. The target there was a concrete-decked steel beam bridge, which was built in the same way as the new Vårdö bridge: right next to the old, decommissioned bridge. The total length of the completed bridge will be approximately 136 metres and its width 15 metres.

The Friitala bridge, built in 1953, had fallen into disrepair so the decision was made to replace it entirely. The main contractor for the project was Kreate, and Ruukki was responsible for the manufacturing of the steel segments. The new bridge is a triple-span continuous composite beam bridge with a reinforced concrete deck slab cast on top of two main steel carrier beams.

The Ruukki production facility in Ylivieska manufactured the steel beams with the deck slab reinforcements already in place during the push stage. Prefabricated steel elements by Ruukki enabled a tight project schedule.

When the frame was in place, the deck casting begun. All surface structures, equipment and devices, as well as other foundations, were made and installed. FSP was responsible for the surface treatment of steel structures at the worksite.

According to Project Manager Aki Viiliäinen of Ruukki, FSP was selected for the Ulvila contract due its reliability, competitiveness, and solid expertise.

”We have utilised FSP’s know-how earlier for similar demanding bridge projects,” says Viiliäinen and states that work at Ulvila will be completed by the end of 2018.

 

Environmental protection was a key factor when FSP was taking care of the surface finishing of the Kraaselinsalmi bridge in the Kemi Ajos area.

 

TWO BRIDGE CONTRACTS IN LAPLAND

In the autumn of 2018, FSP was also contracted to take care of the surface treatment of the 70-metre Kraaselinsalmi bridge in Northern Finland. This is a steel railway bridge situated in the Kemi Ajos area that was in need of renovation.

The main contractor Destia Rail was responsible for the basic renovation of the bridge, built in 1930. They chose FSP as their surface treatment partner after a bidding competition. The main reasons for choosing FSP were good competitiveness, supply security, and the ability to observe agreed schedules.

Site Engineer Mika Tuokila of Destia Rail says that FSP was a natural choice, because the partners have collabo- rated closely in Lapland before. The surface treatment works at Rovaniemi will also be completed during the autumn, with Destia Rail renovating the nearly 400-metre Ounaskoski railway and roadway bridge. The Ounaskoski bridge will be open to traffic again by the end of 2018

 

BRIDGES TREATED BY FSP DURING 2018

Vårdö roadway bridge, Åland

  • A concrete-decked, continuous five-span steel beam bridge in Åland.
  • The new replacement for the old bridge will con- nect the Vårdö and Mickelsö islands.
  • Main contractor Graniittirakennus Kallio.
  • Ruukki was responsible for the steel structure and installation.
  • The steel segments were transported by sea and lifted into place with a sea crane.
  • Length 344 metres.

 

Friitala roadway bridge, Ulvila

  • A concrete-decked, continuous steel beam bridge in Ulvila.
  • The new replacement for the old bridge will cross the Kokemäenjoki river.
  • Main contractor Kreate.
  • Ruukki was responsible for the steel structure and installation.
  • Length 136 metres, width 15 metres.

 

Kraaselinsalmi railway bridge, Kemi

  • A single-span steel railway bridge in Ajos, Kemi.
  • Main contractor Destia was responsible for the renovation.
  • Length approximately 70 metres.

 

Ounaskoski railway and roadway bridge, Rovaniemi

  • A double-decked steel railway and roadway bridge, crossing the Ounaskoski rapids in the river Kemijoki, located at downtown Rovaniemi.
  • Main contractor Destia was responsible for the renovation.
  • Length approximately 400 metres, width 8 metres.
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