Transport Infrastructure

Jan De Nul Group is an important player for large-scale transport infrastructure projects, often by way of a Public Private Partnership. The civil engineering department of Jan De Nul is involved in all project phases. Thanks to a close cooperation with the teams executing these projects, the engineering department is able to continuously adjust and optimise the project-specific processes and tasks.

Jan De Nul Group executes, with its own staff and equipment, earthworks, piling and foundation works, engineering structures, drainage works and concrete constructions.

With the in-house development of this expertise Jan De Nul Group can now also address the international transport infrastructure market.

 

Belgium, Antwerp Tunneling Regional Road R11 - Deurne Tunnel - R11

Construction of a tunnel near the Deurne airport (Design & Build)

Construction of a tunnel near the Deurne airport (Design & Build)

Key figures
Country

Belgium

Client's name

Agentschap Wegen en Verkeer
(Afdeling Antwerpen)

Contractor's role

JV partner (Part JDN: 50%)

Period

06.05.2013 - 31.12.2015

Technical specs
Scope

Diversion road works / diversion bicycle track
Archaeology
Digging up of the existing roads
Temporary peripheral road
Earthworks (tunnel excavation + RESA zone)
Civil Engineering:
- construction of diaphragm walls and secant pile walls
- in safety area airport (RESA zone) first construction of roofing sheet next horizontal excavation and realisation
walls and floor slab
- outside safety area airport first construction of floor slab, next walls and roofing sheet
Technical installations
Completion of tunnel
Sewerage works
Road works
Demolition alternative roads
Permanent bicycle track
Planting

Volume

Excavation: 200,000 m³
Drainage: 150,000 m³
Area/length tunnel: 80,000 m²
Concrete: 70,000 m³
Reinforcement: 6,000 ton
Roads: 13,433 m²
Foundation piles: 2,107 items
Diaphragm walls: 17,877 m²
Demolition works: 35,000 m²

Depth under groundwater table

8 m

Belgium, Aalst Tunnel R41

Construction of tunneling R41 at the Boudewijnlaan in Aalst

Construction of two bicycle tunnels

Construction of tunneling R41 at the Boudewijnlaan in Aalst

Construction of two bicycle tunnels

Key figures
Country

Belgium

Client's name

AWV, afdeling Oost-Vlaanderen

Contractor's role

JV Partner (Part JDN: 20%)

Period

24.08.2015 - 26.06.2017

Technical specs
Equipment

Hoisting crane, mini dumpers, small hoisting cranes, wheel loader

Scope

Tunneling R41 :
- Construction of diaphragm walls
- Construction of roof slab on the ground
- Excavation by mining
- Construction of floor slab in confined space
- Covering of diaphragm walls with steel cladding
- Road works in the tunnel
- Placement of sound absorbing panels
Bicycle tunnel: construction of an oval bicycle tunnel in an open trench

Volume

Tunnel: 700 m long
Concrete: 54,900 m³
Reinforcement: 5,300 ton
Excavation: 83,978 m³
Suppletion: 400 m³
Slurry wall: 31,130 m²
Sheet pile wall: 290 m²
Acoustic panels: 5,800 m²

Belgium, A11 - Realisation of the Connection N31 Bruges - N49 Westkapelle

Financing / Design / Construction / Maintenance of a 12 km long new highway between Bruges Blauwe Toren and N49 in Westkapelle executed by the joint venture Via Brugge NV

Financing / Design / Construction / Maintenance of a 12 km long new highway between Bruges Blauwe Toren and N49 in Westkapelle executed by the joint venture Via Brugge NV

Key figures
Country

Belgium

Client's name

Vlaamse Overheid - Agentschap Wegen en Verkeer
Wegen en Verkeer West Vlaanderen (via het samenwerkingsverband Via-Invest NV)

Contractor's role

JV partner (Part JDN: 45%)

Periode

21.03.2014 - 05.09.2017
(+ 30 years maintenance)

Technical specs
Scope

a 12 km long new highway that will connect two important arterial roads: the N31 in Bruges and the N49 in Westkapelle.
The new highway offers new opportunities to develop the port activities and the regional tourism, but
also for the livability of the region. The works are spread over 18 areas.
The project gets a lot of special international attention because of the way it is financed.
Earthworks: embankment (3,600,000 m³) and excavation (2,600,000 m³) including measures accelerating and
limiting overall settlements
Realisation of about 80 engineering structures (bridges, tunnels, culverts, retaining walls, protective slabs)
Realisation of road works and drainage
Realisation of electromechanical equipment
Planting
Maintenance: 30 years as from September 2017 onwards

Equipment

Draglines, bulldozers, road rollers, dumpers

Volume

Concrete: 319,000 m³
Reinforcement: 32,722 tonnes
Earthworks:
2,600,000 m³ excavation
3,600,000 m³ suppletion

Belgium, Kortrijk Leie Passage

Demolition of bridges, abutments, existing quay walls, sewerage, roads.
Construction of 4,5 km of new quay walls + abutments (Danish quay walls + anchored quay walls).
Deepening/widening...

Demolition of bridges, abutments, existing quay walls, sewerage, roads.
Construction of 4,5 km of new quay walls + abutments (Danish quay walls + anchored quay walls).
Deepening/widening of Leie (dredging works from pontoon).
Construction of 6 bridges over the Leie in Kortrijk: Groeningebrug, Dambrug, Westelijke Ringbrug, Collegebrug, Noordbrug, Budabrug (the latter still under construction).
Realisation of corresponding sewerage and roads along the quay walls and bridges.

Key figures
Country

Belgium

Client's name

Waterwegen en Zeekanaal nv

Contractor's role

Joint Venture Partner

Technical specs
Scope

Demolition of bridges, abutments, existing quay walls, sewerage and roads
Construction of 4,5 km of new quay walls + abutments (Danish quay walls + anchored quay walls)
Deepening/widening of the Leie (dredging works from pontoon)
Construction of 6 bridges over the Leie in Kortrijk: Groeningebrug, Dambrug, Westelijke Ringbrug, Collegebrug, Noordbrug, Budabrug (the latter still under construction)
Realisation of corresponding sewerage and roads along the quay walls and bridges
Driven piles - screw piles
Driven piles with diameters of 45 cm up to 1,600 mm
Selective excavation and transport of soil: 500,000 m³
Treatment of contaminated soil: 400,000 m³
Installation of vertical filter drains for groundwater collection: 1,000 m - depth 10 m
Groundwater treatment installation: 10m³/h (activated carbon, sand filtration)
Excavation of 60,000 m³ domestic waste
Modernization on scale model of 1,350 ton
1 tunnel, 500,000 m³ earthworks
200,000 m² paving/road works
7,000 m sewerage works
Formwork with planed boards in order to simulate the grain structure
Concrete block cast in situ in the hollow abutment, which is later suspended from the bridge as counterweight
Foundation (piles) of abutment on right bank of the Noordbrug in between the old piles of 2 former bridge heads

Belgium, Realisation of the North-South Link Kempen

Key figures
Country

Belgium

Client's name

NV Via Noord Zuid Kempen

Contractor's role

Joint Venture Partner (part JDN 50%)

Period
June 26, 2013
Technical specs
Scope

Construction of 5 bridges, among which a cable-stayed bridge, an arch bridge, two out of reinforced concrete. Three bridges are integral bridges.
Construction of a tunnel with a length of 520 m
Construction of various agricultural and bicycle tunnels (13 in total)
Construction of retaining walls by means of reinforced earth (approx. 85,000 m³)

Volume

Earthworks:
Excavation: 540,000 m³
Raising: 950,000 m³

Belgium, Lummen Cloverleaf

The traffic interchange in Lummen that connects the E313 to the E314 was rebuilt by Jan De Nul Group. For security reasons, it was decided to...

The traffic interchange in Lummen that connects the E313 to the E314 was rebuilt by Jan De Nul Group. For security reasons, it was decided to renovate the old cloverleaf between 2008 and 2012, and to reorganize it into a traffic interchange without junctions. The contract entailed the construction of 12 bridges, the demolition of 4 old bridges, 650,000 m³ of excavation works and 225,000 m3 of asphalting. 

The works were executed in 2 phases: a first structural phase and a second renovation phase.

 

Key figures
Country

Belgium

Client's name

Wegen & Verkeer Limburg Hasselt (Roads & Traffic)

Contractor's role

Phase I: Main Contractor
Phase II: Joint Venture Partner (part JDN: 50 %)

Technical specs
Volume

Supply of ground: min 80,000 m³ + 440,000 m³
Process of grounds on site (digging and raising): 100,000 m³ + 600,000 m³

Foundation techniques

3,595 m cast in situ driven piles (diameter 500 mm)
Piles (foundations): 348 pieces + 358 pieces
Reinforced Concrete Works: 14,000 m³ + 14,500 m³
Armouring: 1,700 ton + 2,286 ton
Pre-stressed: 200 ton + 160 ton
Asphalt works: 3,500 m² + 200,000 m²

Bridges

Construction of 2 culverts, construction of 1 temporary and 4 permanent
bridges, widening of 1 existing bridge
Moving two bridges of 6,000 ton + two of 8,000 ton
Placing of temporary support structures above the highway

Earth works

Excavation of 1,150,000 m³ soil;
Backfilling and profiling of 595,000 m³

Belgium, Railway Tunnel and Station Schuman-Josaphat

A new railway tunnel will be constructed to link railway 161 (Brussels-Namur) to rail 26 (Halle-Vilvoorde).  Those exceptional works are being executed in the European quarter in Brussels (Belgium...

A new railway tunnel will be constructed to link railway 161 (Brussels-Namur) to rail 26 (Halle-Vilvoorde).  Those exceptional works are being executed in the European quarter in Brussels (Belgium). Very little activity can be seen or heard on the surface, since most of the works are executed underground.

The tunnel with a length of 1,250 m has been excavated beneath a very dense region.
The new railway starts under the Résidence Palace and is connected to the existing railway tunnel nearby the Plaskyplein. To execute the project without disrupting the urban life, a number of innovative construction methods are used. 

The project also includes the extension and rehabilitation of the existing underground and railway station Schuman.  The new rail tunnel in the train station is being executed on top of the metro link and underneath the road tunnel of the Wetstraat.

These works are being executed within the framework of the project ‘GEN’, the regional express network, is a rapid transit system under construction in Belgium. It will significantly improve the train connections to Brussels. Also the connections with the European quarter and the airport will be more fluent and the new tunnel will partly lighten the very busy north-south connection.

 

Key figures
Country

Belgium

Client's name

Federale Overheidsdienst Mobiliteit en Vervoer

Contractor's role

JV Partner (Part JDN 40%)

Period
May 6, 2009 to June 1, 2014
Technical specs
Scope

Extension and renovation of existing underground train- and subway station
Works are executed in phases (construction of walls and columns / demolition of existing parking lot and walls).
Train- and subway traffic will remain possible at all times – hindrance to travelers is limited as much as possible.
The demolition works are executed by sawing out and manual demolition of concrete blocks with mini-excavators and excavators, removal of debris is done with mini-dumpers and bobcats.
Existing buildings Residence Palace/Wetstraat/Berlaymont are strutted during the construction of the new concrete structure.
The roof structure above the subway and the new railway line consists of 4 girders, with in situ formwork, poured and post-tensioned lengthwise and cross girders of prefabricated prestressed girders. The roof structures are made watertight.
Construction of columns for the new railway line.

Volumes

Groundworks: 17,000 m³
Retaining walls with jet grouting: 8,000 m
Concrete Works: 20,000 m³
Reinforcement: 2,200 tonnes
Piles: tube piles diam 60 cm or 90 cm - 6,993 metres
Prestressed Beams: 1,200 m³ in C40/50 concrete of which the largest counts for a volume of 258 m³ and is constructed with 27 strings T15,2