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From June 21 maintenance work at Måløy Bridge in Vestland County will affect navigation in the fairway. See more information here

Invitation to supplier conference for the construction of Stad ship tunnel

The Norwegian Coastal Administration aims to announce the competition for turnkey contracts at the end of 2021.
Photo:Kystverket/Snøhetta/Plomp

In September, the Norwegian Coastal Administration will hold a supplier conference at which relevant stakeholders who can contribute to the effective and sustainable implementation of a design and construct contract for the construction of Stad Ship Tunnel will be welcomed. − We are using this form of supplier dialogue to ensure that the basis for competition will allow for good alternatives and possible solutions, explains Director general Einar Vik Arset at the NCA, who also chairs the project committee for Stad ship tunnel.

The Norwegian Coastal Administration (NCA) wishes dialogue with the market regarding the planned invitations to tender for the design and construct contract for the construction of Stad ship tunnel.

This is important so as to be able to present the project and the process to relevant suppliers - but also to find solutions, technology and alternatives that we haven’t thought of. It is about ensuring that the basis for competition does not exclude good alternatives and solutions
Director general Einar Vik Arset , the Norwegian Coastal Administration.

The NCA intends to announce the competition at the end of 2021. The aim is then to sign a contract at the end of 2022, with the start of construction of Stad ship tunnel in Spring 2023.  

− This progression means a slightly delayed start up, and thereby a slightly later opening of the ship tunnel than was previously outlined. The start-up phase of projects of this dimension defines the subsequent process. It is extremely important to ensure a correct start for this extensive project, which means that we have an extremely thorough process for this procurement, project manager Terje Andreassen says.

Extensive

Stad ship tunnel is primarily what is known as a fairway project, and it will be the world’s first full-scale ship tunnel. Parts/elements of the construction of the ship tunnel are methods that is known to the industry. The challenge here is that there are few, if any, comparable projects where all these elements are brought together.

− To put it very simply, this is more like a big, long mutain hall than a tunnel. The upper part of the ship tunnel will be driven through in the same way that ordinary tunnels are constructed. Then the bottom will be blasted out, layer by layer. In mining this is known as bench blasting. This is very extensive work that will be done to make the tunnel safe and navigable. That is to say, establishing structures and rockfall protection that are similar to the solutions for quay and jetty construction, explains Andreassen.

And we are talking about huge quantities of excavated material. The tunnel will be 1.7 kilometres long.

− In total, we are talking about around three million cubic metres of solid rock. That corresponds to about eight million tonnes of excavated material. About two-thirds will be large boulders from blasting. The rest will be smaller material from ordinary tunnelling, explains Andreassen.

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