De Groene Boog

De Groene Boog, a consortium namely consisting of Besix, Dura Vermeer, Van Oord, TBI (Mobilis, CroonWolters & Dros), Rebel en John Laing is commissioned by Rijkswaterstaat to carry out the A16 Rotterdam project.

The project concerns the realization of a connection between the Terbregseplein and the A13 highway at The Hague Airport of Rotterdam. For this purpose, the existing A16 highway will be extended by 11 kilometers at the northern edge of Rotterdam and connections will be made with the N471, the Ankie Verbeek-Ohrlaan and the Terbregseplein. The new connection will ensure that the traffic on the A13, A20 highways and the surrounding local roads will soon be able to continue more efficiently and also will contribute to a better accessibility and liveability of the region.









Example image route, source: www.a16rotterdam.nl

The work consists of the realisation of the embankment for the new A16 highway including adjacent ground works and several dozen of civil engineering works. The most remarkable work regarding civil engineering is a semi-immersed land tunnel which has a length of 2.2 kilometres in the Lage Bergse Bos. For the construction of the land tunnel, it is also necessary to pass the ‘’De Rotte and Vaart Bleiswijk’’ storage basins. In addition, a number of special works are the passing of the HSL railway, the Randstad Rail, a Fly-over from 450 m over the Tebregseplein and the complex phasing works to minimally influence the current traffic flows.

Crossing Terbregseplein, source: www.a16rotterdam.nl

The road construction will start in 2019 and will be open to traffic in 2024. From a sustainability point of view, the road, including the tunnel, will be completely energy-neutral. This means that the energy consumed will be as much as the energy generated. This is not the first energy-neutral national road, but it is the first road with a tunnel.

Intersection HSL and Randstadrail, source: www.a16rotterdam.nl

The project concerns a DBFM-contract and the cost of constructing the new road is close to 1 billion EUR, including a project-restraint regional contribution of 92 million EUR. The contract also includes management and maintenance for a period of 20 years.

CRUX Engineering contributes significantly to the project team with 5 full-time geotechnical and 2 full-time geohydrological consultants. The consultants are responsible for, among other things, the foundation design of the various structures, the design of the embankment for both the permanent and temporary situation, stability of the embankments, geohydrological advice. CRUX is also responsible for the overall geotechnical project management.

More information: www.a16rotterdam.nl

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At the beginning of 2020, what the CRUX advisors have calculated over the past one and a half year will also become visible outside. Some groundworks have already taken place at various locations to provide access for the construction equipment. Vertical drainage will be installed on these sand surfaces to accelerate the subsidence of the high embankments. In addition, various measures are being taken to ensure safety and to limit the impact on the surrounding area. For example, at the crossing with the N471 and the President Rooseveltweg, sheet piling has been installed to protect cables and pipelines.

Laying first foundation piles, Terbregseplein

The first pile is always a milestone for a project organization, as in this case, for De Groene Boog. In the Terbregseplein, the first foundation piles calculated by CRUX will be drilled for the fly-over of the intersection. In order to limit nuisance to the surrounding area, these piles are not driven but screwed in. Later, the suppors and the deck of the fly-over will be placed on this pile.

Application of screw post with grout injection

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