Most of rugged Tajikistan's transportation system was built during the Soviet era, and since that time the system has deteriorated badly because of insufficient investment and maintenance. In 2013, Tajikistan, like many of the other Central Asian countries, was experiencing major development in its transportation sector. Beginning in 2005, a series of major transportation projects were begun. The first such project, the Anzob Tunnel, was inaugurated in 2006, providing a year-round road link from Dushanbe to northern Tajikistan.