Colas Group

COLAS Group is the world leader in transport infrastructure

The COLAS Group is a world leader in the construction and maintenance of transport infrastructure. Our mission is to design, promote and build infrastructure solutions for sustainable mobility. Our three main business segments are Roads, Materials and Railways. Railways. To find out more about COLAS Group visit


Roads account for roughly 69% of the Group's total business activity in 2018, including the construction and maintenance of roads, highways, runways, city streets, urban development projects, reserved-lane public transport (tramways and bus lanes), ports, industrial platforms, logistics and retail hubs, recreational facilities, bike paths, and environmental projects.

COLAS also provide civil engineering services (small and large structures) and operates in the building sector (construction, rehabilitation, deconstruction) in certain regions.

Construction Materials

Construction materials (in particular aggregates and bitumen) account for 16% of the Group's total business activity in 2018. Upstream from its construction and maintenance business, the Group operates in the production, distribution, sales and recycling of construction materials (aggregates, emulsions and binders, asphalt mixes, ready-mix concrete, bitumen) including bitumen storage.

This is achieved through its extensive international network of quarries, gravel pits, emulsion plants, asphalt plants, concrete plants, recycling units, bitumen terminals and a bitumen production plant.


The Railway business, performed by COLAS Rail and its subsidiaries, accounts for 7% of the Group's total revenue in 2018.

It includes the design and engineering of large complex projects, the construction, renewal and maintenance of railway networks (HSL high-speed lines, conventional lines, trams, metros), including track laying and maintenance, electrification (catenaries and substations), signalling and security systems, etc., as well as rail freight activity.