The Anzob Tunnel is a 5,040m long tunnel located 80 km northwest of Tajikistan's capital Dushanbe.
The tunnel connects the Tajik capital to the country's second largest city, Khujand, travel to which, prior to the tunnel's construction, required travelers to cross the border into Uzbekistan in order to travel between the two cities. It is also a transit route between Dushanbe and Uzbekistan's capital Tashkent. Prior to construction of the tunnel, especially during winter, the threat of year-round avalanches led to periodic disruptions of commerce.
Assessment of design, traffic studies, and the partial construction on site, in addition to preparing technical and financial reports.