The fast pace of metropolitan development has led to the decrease of accessible space for the construction of roads and connecting cities and urban areas. Hence, the construction of tunnels plays a vital role in delivering safe, cost-effective, and enduring solutions to the modernization of cities. Here at Tunnel Sadd Ariana, our expertise in the planning, design, construction, and operation of tunnels not only is utilized in the transportation sector, but also covers other sectors such as hydropower, mining, and underground excavation and space developments.