Site investigation for island megaproject

Fugro’s 'Skate 3' modular jack-up acquiring high-quality geotechnical data
Fugro’s 'Skate 3' modular jack-up acquiring high-quality geotechnical data
The vision is to build a new island called Lynetteholm north of Refshale Island  (Image: Danish Ministry of Transport)
The vision is to build a new island called Lynetteholm north of Refshale Island (Image: Danish Ministry of Transport)
Industry Database

Denmark has taken serious steps towards building a man made island that will entail the largest construction project in the country since the 17th century.

The vision is to build a new island called Lynetteholm north of Refshale Island in Copenhagen with room for about 35,000 residents and a similar number of jobs. An additional 15,000 new jobs are expected on the adjoining Refshale Island.

Since Danish Prime Minister Lars Løkke Rasmussen and Copenhagen’s Mayor, Frank Jensen announced something close to the final go-ahead for the scheme in October 2019, Danish consulting firm COWI has awarded Fugro a nearshore geotechnical site investigation for CPH City & Port Development.

Fugro’s site investigation will be used to inform the detailed design of the new artificial island, which will cover approximately 275 hectares and increase the Danish capital’s land mass by around 2 %. Fugro’s solution will acquire high-quality geotechnical data in shallow water depths from a single jack-up, and ensure fast and efficient data delivery via Fugro’s newly developed Gaia solution.

JACK-UP ON SITE
Fugro began work in September this year with the successful mobilisation of the Skate 3 modular jack-up; the fieldwork is expected to complete in March 2020. Fugro’s innovative geotechnical solution for the Lynetteholmen megaproject will achieve significant time and cost savings whilst delivering programme surety.

Malte Larsen, Geotechnical Engineer, COWI: “The future island of Lynetteholmen is the largest construction project in Denmark since the 17th century, and it will leave a significant mark on the city of Copenhagen, not to mention Denmark and the Øresund region. We’re excited to be working with Fugro on this iconic project, which will comprise more boreholes and CPTs than other recent large infrastructure projects, such as the Great Belt Bridge and the Øresund Bridge.”

"It is a huge project," emphasized Prime Minister Lars Løkke Rasmussen at a press conference.

THREE CHALLENGES
The vision, with a total price tag of around 20 billion kroner, must solve three challenges at the same time: the lack of housing in Copenhagen, the traffic congestion through Copenhagen's city centre towards the airport and, the climate protection of the Port of Copenhagen against sea level rise.

Lynetteholm will be created with approximately two million square metres of surplus land from other large construction projects, and will also act as a form of breakwater for other parts of the city.

Construction of the first dwellings on the new island is estimated to begin in 2035, and the district is not expected to be fully developed and inhabited until around 2070.

According to the government, the total project can be financed from its own revenues, among other things, from the sale of the new building plots and user payments in the subway and on the upcoming Eastern Ring Road.

A newly formed subsidiary of the capital's development company By & Havn will be responsible for the construction of Lynetteholmen. The state and the City of Copenhagen will each own half, and at the same time the pension companies that own parts of the Refshale Island will also be involved.

According to Transport Minister Ole Birk Olesen, the entire project will cost taxpayers 'zero kroner' due to the sale of the land on the artificial island.

The plans require further feasibility studies and political discussions at both Christiansborg and Copenhagen City Hall before the excavators can get started. The assumption is that a majority in the Parliament and in the Copenhagen Citizens' Representation support the agreement.

In 2013, an analysis from the Ministry of Transport estimated that the project with the route to the Amager motorway will cost around DKK 20 billion. A two-year feasibility study was launched in 2017.

By Jake Frith

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