JV of Marti Tunnelbau, Parietti et Gindrat, and MTS (Marti Travaux Spéciaux) signed the contract for the 3,287 m-long Choindez tunnel on the A16 highway in the canton of Jura. The tunnel will be open to traffic in the year 2016. The project includes seven crosscuts for persons, three parking bays with crosscuts for vehicles, and two ventilation control centres. Expected rock quality is a sequence of Jurassic and Tertiary sediments, which require different excavation methods. Drill/blast will be used for 1,700 m, road headers for 680 m, and excavation under the protection of pipe umbrellas for 400 m. A Marti Technik AG conveyor will be used in the existing pilot tunnels. Visit www.martiag.ch, www.parietti-gindrat.ch and www.a16.ch. 09/11.
