Better access to the immense Istrian peninsula 

Istria is the largest peninsula in Croatia. This region jutting out into the Adriatic Sea lies in the north-west of the country and has a rich natural and cultural heritage due to its location and history. Separated from Croatian territory by the Ćićarija massif, not far from Italy and Slovenia, Istria has been home to many peoples, who have left significant traces. 

The region has become one of Europe's most popular tourist destinations in only a few years, thanks to the cultural treasures it contains. In 1997, because of this steady flow of visitors, work began on the construction and subsequent upgrading of a 150-kilometre motorway network, to provide a better service for Croatia’s road users and the millions of tourists who visit the country each year. 

A relationship of trust going back over 25 years 

Operated and maintained for over 25 years by the concession company Bina Istra, in which Bouygues Travaux Publics holds shares, the existing infrastructure improves mobility and furthers the peninsula’s economic development. It is a road that has truly redefined the Croatian territory.

In the context of this work, the Bouygues Travaux Publics teams have now signed for two new phases, which involve:
- Doubling of 12 km of motorway between the Učka tunnel and Matulji.
- Doubling of the Limska Draga viaduct.
- Doubling of the Mirna viaduct.

Two different techniques will be used to build the viaducts: steel caissons placed by crane on concrete piers for the Limska Draga viaduct, and a concrete deck cast on two steel beams, themselves standing on piers, for the Mirna viaduct (construction by incremental launching).

Images of the structures acquiring 4-lane dual carriageways. 

When these phases are completed, the entire motorway network on the peninsula will have 4-lane dual carriageways. 

Congratulations to our teams on this new contract!