As a member of the Vélopolis consortium, Bouygues Bâtiment Ile-de-France took part in the construction of the Saint-Quentin-en-Yvelines velodrome, the largest in France. Just as imposing as the sporting events it will host, the complex contains unique features such as the world’s first 250-metre long, 8-metre wide cycle track and the first covered BMX track in Europe. The velodrome also houses the headquarters of the French Cycling Federation. Bouygues Energies & Services was chosen to manage the upkeep, major maintenance and renewal of the site for 30 years. A major technical challenge is posed by the pine-surfaced track: stringent monitoring of indoor temperature and humidity is essential in order to maintain its level of performance.