_The strength of experience.
For more than 40 years, Bouygues Travaux Publics has been a leading player in the tunnelling and underground construction industry. Our expertise spans the design, construction, refurbishment and fit-out of tunnels, as well as the excavation of underground caverns. Mastering every excavation method, we have built our reputation on our ability to tunnel through complex geological conditions and deliver some of the world's largest-diameter tunnels.
By relying on a strong network of industrial and academic partners, Bouygues Travaux Publics embraces the power of collective intelligence, bringing recognised expertise across the entire construction value chain.

_More than 680 kilometres of tunnels across five continents.
From Miami to Paris, Cairo, Doha, Hong Kong and Sydney, Bouygues Travaux Publics has successfully delivered more than one hundred tunnelling projects, including 26 rail tunnels and 36 road tunnels.
Our expertise covers tunnels of every diameter, ranging from 3.85 metres to 17.63 metres—the world record achieved in Hong Kong in 2015. We design and build tunnels for every purpose: public transport systems, road infrastructure, drinking water supply, wastewater conveyance, underground storage facilities, utility galleries and underground networks.

Today, we are ready to meet tomorrow's challenges: tunnelling through complex ground conditions and water-bearing soils, operating beneath densely populated urban environments, and excavating at ever greater depths.

_The tunnel spirit.
Teamwork, autonomy and a strong sense of belonging define the tunnel spirit. It combines a passion for the profession, the pursuit of technical excellence and the commitment to passing on knowledge and expertise. Driven by these values and by the experience of our teams, Bouygues Travaux Publics supports its clients at every stage of their underground projects.