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In the south of Burgundy, near the town of Chalon-sur-Saône, labeled Ville d'Art et d'Histoire (City of Art and History), our teams have begun construction work on the Chalon Nord half interchange on the A6 motorway on behalf of APRR (Autoroutes Paris-Rhin-Rhône). This project, which supports the economic dynamism of the north Chalon area, aims to improve safety, to fluidify and optimise vehicle traffic. It represents a real challenge: in the long term, it will make it possible to limit polluting atmospheric emissions, linked in particular to the passage of heavy goods vehicles. In total, this new road development will allow a reduction of 7% of these emissions, starting in 2024!

Reducing the carbon footprint of the worksite

The construction works are also part of a process to reduce the carbon footprint of our activities, with the use of less polluting materials. The teams will use incinerator bottom ash for the sub-bases, which is the residue left after the incineration of household waste and can be recycled in the construction sector. It is not the only material that will be recycled! The local excavated material will be reused to build a large part of the embankments. 

And that's not all! A wooden worksite base has been installed, one of the first of its kind within the company. This structure is an example of our approach in terms of energy sobriety, as it will allow a 67% reduction in CO2 emissions (electricity on the network). A recharging station for electric vehicles has also been provided to encourage their use.

One site, several structures

The new Chalon-sur-Saône half interchange will help create a new access to the town from the north of the conurbation. To do this, the work consists of reusing the existing infrastructure to make optimal use of the remaining space. 

Bouygues Travaux Publics Régions France teams are in charge of the following works:

• A 800-metre-long entry ramp with a two-lane toll station
• A 580-metre-long exit ramp with a three-lane toll station
• A bridge over the Thalie to accommodate the exit ramp
• A wider passage on the existing motorway 

Recently, the teams built the temporary bridge over the Thalie, which will allow the construction of the final structure. Although temporary, this 15-metre-long structure is designed to support the comings and goings of shovels, cranes and other lorries and will be able to accommodate up to 50 tonnes of machinery and equipment.


Earthworks have just started simultaneously in the areas where the two ramps will be built. 

A big congratulations to the teams for the launch of the work!

Preserving protected species
The environmental impact study carried out by the project revealed the presence of two plants of Coronille faux sénés in the work area. A protected species in Bourgogne-Franche-Comté, these yellow-flowered shrubs were moved to an area with a similar environmental setting to preserve them.

Within the framework of this project, particular attention is paid to the preservation of biodiversity. Our teams have been specifically trained in environmental issues.
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