
Grimsel Staumauer Spitallamm
Construction of a double curved arch dam directly in front of the existing wall. The old dam remains in place and is dammed on both sides.
Quality and reliability first
Civil engineering
Implenia plans and builds complex civil engineering projects - from small construction projects to large-scale projects of the century.
Services
Your reliable partner to further develop infrastructures and ensure mobility

When realizing your project, you benefit from our regional presence as well as from our competence as a group operating in an integrated manner throughout Europe. We offer you comprehensive services from a single source and rely on innovative solutions such as Building Information Modeling and Lean Construction to optimize our processes and provide you with planning security. Because our concern is full transparency for our customers and the implementation of your project in line with quality, deadlines and costs.
With our competence and experience, we stand for the highest quality. Rely on our expertise for the success of your construction project.
Road transport infrastructure
A basic prerequisite for the economy is a functioning road network. Implenia is actively involved in renovating and renewing bridges to ensure mobility.
With its own specialist areas such as prestressing technology and special civil engineering, services are offered from a single source. With its many years of experience in concrete construction, the planners in its technical design office and the expertise of its own construction materials laboratory, Implenia implements complex construction projects with quality and on schedule.
Our range of services
- Construction materials engineering
- Post-tensioning technology
- Repair
- Special civil engineering
- Concrete construction
Transport infrastructure rail
Implenia has decades of experience in transport infrastructure construction for the rail network and competently masters the special challenges of this sector.
Rail is an important part of the transport infrastructure. Goods are transported in an environmentally friendly manner via the rail network, and millions of travelers use the railroad every day for their commute to work. It is a safe means of transport with a long history and good prospects for the future. The aging infrastructure must be regularly renewed and adapted to changing needs.
Implenia has decades of experience in transport infrastructure construction for the rail network and competently masters the special challenges of this sector: construction during ongoing rail operations and completion within short closure times.
Our range of services
With the help of in-house logistics experts, complex construction projects can be completed safely and on schedule. The range of services includes:
- Railroad overpasses
- Penetrations
- Bridges
- noise barriers
Urban transport infrastructure
Inner-city traffic is steadily increasing. Cities and municipalities are therefore faced with the task of creating or expanding the corresponding urban transport infrastructure or replacing it with new, more efficient infrastructure. The associated projects are accordingly becoming larger, more complex and more demanding.
We implement these major projects as a general contractor across all trades. We apply our experience and management expertise in conjunction with other units of the Implenia Group (including Planning, Foundation Engineering, Tunneling, Logistics) - in a spirit of partnership, solution-oriented and in the service of our customers. We always keep an eye on deadlines, costs and quality.
Our range of services
As a general contractor spanning all trades, we construct, expand and renew engineering structures for road, urban and suburban rail construction as a complete service. This includes
- Tunnels
- Bridges
- Ramps
- retaining walls
- Stations and stops
Solid construction & reinforced concrete construction
With Implenia, you have a reliable and competent partner at your side who is happy to realize your projects together with you.
Our comprehensive expertise in the field of solid construction and reinforced concrete construction ensures that your construction projects are implemented in a qualitatively as well as technically high-quality and cost-effective manner. Our portfolio ranges from heavy concrete construction for dams to the new construction and conversion of power plants to large reinforced concrete halls, e.g. for the dismantling of nuclear power plants (residual material processing centers).
Structural engineering
Our structural engineering professionals ensure that the existing infrastructure is expanded and built. Whether it's industrial and commercial buildings, bridges or the rail network - we plan, organize and implement projects and thus continuously develop the European infrastructure network.
Our range of services
Extension and construction of existing infrastructure of:
- Industrial and commercial buildings
- bridges
- railway network
Water and sewage plant construction
Implenia implements water and wastewater treatment projects throughout Germany. In doing so, we work closely with planners and municipalities.
With Implenia, you commission a general contractor with many years of experience. As a competent and reliable partner, we realize your projects on a turnkey basis and to your complete satisfaction. Equipment and electrical engineering are also part of our service portfolio.
Our range of services
Wastewater sector
- Wastewater treatment plants
- Rainwater retention basins
- Stormwater overflow basins
- Pumping stations
- Monolithic storage sewers
Drinking water sector
- Rehabilitation and construction of drinking water elevated tanks
- Rehabilitation and extension of drinking water extraction and treatment plants
- New construction and rehabilitation of waterworks
- New construction and rehabilitation of pumping stations and distribution stations
Industrial construction
Implenia is a reliable and competent partner for you as an industrial customer or public authority, who will be pleased to realize your projects and construction services for all needs together with you - from shell construction to turnkey, via deep foundations and special civil engineering (also in groundwater), reinforced concrete construction and steel construction.
With highly qualified construction site management, professional work preparation as well as quality and safety-conscious actions, we implement the most demanding tasks for our customers on schedule.
With our experienced and reliable partners, we can also offer services in other key trades, such as facades, green roofs or technical building equipment (TGA).
During project execution, we adapt to local conditions - such as ongoing production - and ensure a smooth process without interfering with your business activities. We meet the high and specific requirements of occupational safety in industrial plants without any ifs and buts. Our employees also have many years of experience in Anglo-Saxon contract and project management.
In addition, we realize combined office or administration buildings and halls, such as fire and rescue stations, for the public sector.
Our range of services
(Turnkey) construction of:
Production and assembly halls for industry
factories for processing raw materials (from heavy to pharmaceutical industry)
Factories with increased requirements for building services engineering
Office buildings and other structures necessary for the use of the whole plant and its operation
Noise protection
We have many years of experience in the realization of noise barriers on federal, public and industrial railroads. We are your competent partner for earthworks and demolition work, foundation work, reinforced concrete work, for scheduling and sequence planning, construction site logistics and for all assembly work.
Our primary goal is constructive cooperation with our clients for the timely realization of demanding construction projects of the highest quality.
Our promise
The expertise and flexibility of our entire team, our work preparation, the availability of our own special equipment as well as experienced and competent operating and workshop personnel offer you fast response times for the realization of your project, even in night and weekend shift operation.
Insights
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Civil Engineering References
Here is a selection of our civil engineering projects

Schwamendingen enclosure - noise protection measure
The enclosure of the N01/40 national road between the Aubrugg motorway junction and the Schöneichtunnel over a length of just under one kilometre will create a utility structure around 30 metres wide that is unique in Switzerland. Construction of the new cut-and-cover tunnel with a length of 940 metres, a width of 30 metres and a height of 8 to 10 metres.
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Renewal Waldenburg Railway
The renewal of the Waldenburg railway between Liestal and Waldenburg includes the upgrading of sections of the line to double track, the reconstruction and new construction of stops, the total renovation of the Waldenburg terminus and the construction of a new workshop. A gauge change to one metre gauge and a new safety layer are planned for the entire line.
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Nant de Drance pumped storage power station
Construction of a pumped storage power plant between the two dam walls. The new power plant cavern is located at an altitude of approx. 1700 m. The underground facility is accessed from below through a 5 km long tunnel and from above through a 2 km long tunnel system.
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Cologny pontoons
The attraction of this new bathing area is undoubtedly the "large floating wooden circle" on the lake, which is located in front of the shore. It is the largest platform of its kind on Lake Geneva. The special attraction of this facility is the central pool opening. Bathers can enjoy an unobstructed view of the Lake Geneva basin and its world-famous "Jet d'Eau".
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Oerlikon station extension track 7+8
The Oerlikon station extension is part of the overall SBB project for the Zurich cross-city link. In order to guarantee the capacity increase in connection with the cross-city link, Oerlikon station will be extended by two new train tracks and a 150 m long retaining wall.
Read moreImplenia Civil locations

Civil Engineering is represented at numerous locations at Implenia in Switzerland. This makes us a close partner with regional market knowledge and connections that involve and promote local companies and structures.