Following our success on the Lee Tunnel project (waste- and stormwater collection in London), Scottish Water, which runs the public water-management network in that country, entrusted a consortium that included VINCI Construction Grands Projets with the design-build mandate for the Shieldhall Tunnel.
The project consists in the construction of 2 shafts 20 metres deep and 15 metres in diameter, a cut-and-cover trench 250 metres long, and a tunnel 5 kilometres long (with an interior diameter of 4.7 metres).

Building more than 14 kilometres of tunnels below one of the world’s busiest airports is a challenging objective that we successfully achieved. To be precise, we were mandated to design and build 7 tunnels of a total length of 14,160 metres. To meet the site specific constraints and the requirements of an airport environment, the project team had to develop customised techniques, including the use of a dual-mode air/earth pressure balance TBM and implementation of sprayed concrete lining.

This infrastructure is a first for a country that has had, until now, only a bus network for a public transit system. Construction of this metro line is part of a vast development project in Qatar. VINCI Construction Grands Projets, through its local subsidiary QDVC, was mandated to design and build a 13.8-kilometre dual-tube underground rail line. The structure will connect Doha Airport to the district of Msheireb, the historic centre of the Qatari capital. The project also includes design and construction for five underground stations, 32 safety intert-tube connections, and five emergency evacuation shafts.
This five-year project mobilises a workforce of up to 3,000 people.

Design and construction of the Storebælt rail tunnels were part of a project to create road and rail links to Storebælt. These tunnels are located between the islands of Funen and Zealand and were built as part of the development of a fixed link between Copenhagen and the Continent. The Great Belt Fixed Link (a road and rail connection between Denmark’s two largest islands, Zealand and Funen) is the country’s leading transport corridor. In total, the project includes 18 kilometres of engineering structures. We were mandated to build 2 of these tunnels (under the sea), which are 7.4 kilometres long and have an interior diameter of 7.70 metres.

After taking part 10 years ago in the construction of the Hong Kong metro from 1998 to 2002 by building the 5 tunnels in Black Hills as part of the system’s expansion to the new city of Tseung Kwan O, VINCI Construction Grands Projets was mandated by MTR Corporation Limited (which operates the Hong Kong metro) to undertake 2 lots for the new Shatin to Central Link (CSL) line.
The first lot calls for the construction of a 2,475-metre using the blast method and a 1,400-metre twin-tube tunnel excavated by TBM. The second lot consists in the construction 700-metre tunnel by means of blasting.

This project, which will rank among the most outstanding underground works ever for a long time, marked a major advance in the art of TBM excavation. The Hallandsås dual railway tunnel, located in western Sweden and inaugurated on December 8, 2015, required more than 25 years of concerted effort to complete. It was with a view to replacing a 100-year-old single-track stretch (and a permanent bottleneck between the cities of Göteborg and Malmö) that the parliament in Stockholm decided to build 2 rail tunnels 11 kilometres in total length with a diameter of 9.04 metres linking Skottorp and Förslöv. The project was initiated in 1991 and would only be completed 25 years later as a result of multiple technical setbacks. Following successive failures by local companies, we were mandated by Trafikverket to develop this structure in partnership with the Swedish firm, Skanska.

The project was part of a construction initiative to build high-speed rail lines in Belgium, specifically between Brussels and the border with Germany: a distance of 147 kilometres, with the line going through Louvain and Liège.
On a 42-kilometre section of this line, VINCI Construction Grands Projets was mandated to build a tunnel more than 6 kilometres long between Chenée and Soumagne, close to the Chaudfontaine spa and about 10 kilometres from Liège.
The project covers more than 6.5 kilometres in total length and includes the 5.9-kilometre tunnel as well as two cut-and-cover trenches, 177 and 413 metres long, respectively. The two-way tunnel, which is sloped at 1.7%, includes a 110-m² excavated section.

This project covers the rail link to the tunnel below the English Channel, also known as High Speed 1 (HS1). This is the first high-speed rail line to be built in the United Kingdom. It is 108 kilometres long and connects the entrance to the Channel Tunnel (Chunnel) on the British side to London.

On this project, VINCI Construction Grands Projets was mandated by Union Railways Ltd to carry out 3 lots, including the construction of a single-tube tunnel 3 kilometres long, a bridge 1,255 metres long (including a 305-metre central span), a new section 13.8 kilometres long (including an incrementally launched bridge 1,025 metres long), two viaducts (675 and 454 metres, respectively), and 14 engineering structures of various kinds.

London’s spread and density make managing its railway network a constant challenge. The Crossrail network crosses London from east to west. This was one of the largest railway-infrastructure projects in all of Europe.
VINCI Construction Grands Projets involved in it as part of a consortium in charge of 2 contracts. The first contract (lot C510) included the construction of tunnels at Liverpool Street and Whitechapel Stations along with related structures. The second contract (lot C512) called for the partial demolition of Whitechapel Station and construction of a new station and ticket-sale space. It also included construction of 3 shafts, internal structures, a footbridge and tunnel platforms, along with related electrical, mechanical, and architectural infrastructure.

Reconciling Londoners with a cleaner River Thames – that was a key challenge for the British capital. VINCI Construction Grands Projets contributed to this endeavour with a design-build project for a stormwater and sewage collection system between the Abbey Mills and Beckton pumping stations: the Lee Tunnel. The project called for the construction of a tunnel 6.9 kilometres long with an internal diameter of 7.2 metres. Located at a depth reaching 80 metres, it will reduce by half the 32 million cubic metres of wastewater poured into the Thames every year by collecting it at the source.