Filter our solutions by categories:

Back to the solutions sustainable-cities


Faced with the small size of its territory, the Principality of Monaco has launched a new offshore urban development project to create an eco-district on a six-hectare land reclamation site between now and 2025. Alongside the concessionaire, made up of Monegasque shareholders and the Bouygues group, Egis is designing all the maritime infrastructure for this major project.

Between the cove of Portier and the Grimaldi Forum, a new district is about to emerge, bringing the total area reclaimed from the sea to 40 hectares, some 20% of Monaco’s surface area. A major challenge for the Principality! The construction of a six-hectare eco-district will not only help to revitalise Monaco’s town planning, but also accommodate a rapidly growing population.


Egis is designing all the maritime infrastructure for this major project. Hydraulic and geotechnical expertise were harnessed from the very first studies in order to identify the project’s constraints. Seabed depth, geology, and the effects of the swell and seismic risks are just some of the many factors to be considered when establishing the sustainability of these infrastructures.

The study phase required constant interaction with the various project stakeholders, to ensure that all of the project’s issues are incorporated at every stage of the work. In addition to the technical aspects, it is environmental considerations, which are of primary importance for the Principality, that guided the overall design.

The new coastline created by this extension will lie at the centre of two natural areas: the Larvotto Reserve and the Spélugues coral reef. “Measures will be taken to move and restore protected species (Noble pen shells, Posidonia seagrass, etc.) outside the project zone. There will be constant monitoring of the risks of turbidity (particles suspended in the sea) during the construction phase. Finally, being mindful to protect biodiversity, the façades of the caissons have been specially designed to be able to host marine fauna and flora.