The Eurasian Land Bridge (), sometimes called the New Silk Road (, ), is the rail transport route for moving freight and passengers overland between Pacific seaports in the Russian Far East and China and seaports in Europe. The route, a transcontinental railroad and rail land bridge, currently comprises the Trans-Siberian Railway, which runs through Russia and is sometimes called the Northern East-West Corridor, and the New Eurasian Land Bridge or Second Eurasian Continental Bridge, running through China and Kazakhstan. As of November 2007, about one percent of the $600 billion in goods shipped from Asia to Europe each year were delivered by inland transport routes. Completed in 1916, the Trans-Siberian connects Moscow with Russian Pacific seaports such as Vladivostok. From the 1960s until the early 1990s the railway served as the primary land bridge between Asia and Europe, until several factors caused the use of the railway for transcontinental freight to dwindle. One factor is that the railways of the former Soviet Union use a wider rail gauge than most of the rest of Europe as well as China. Recently, however, the Trans-Siberian has regained ground as a viable land route between the two continents. China's rail system had long linked to the Trans-Siberian via northeastern China and Mongolia. In 1990, China added a link between its rail system and the Trans-Siberian via Kazakhstan. China calls its uninterrupted rail link between the port city of Lianyungang and Kazakhstan the New Eurasian Land Bridge or Second Eurasian Continental Bridge. In addition to Kazakhstan, the railways connect with other countries in Central Asia and the Middle East, including Iran. With the October 2013 completion of the rail link across the Bosphorus under the Marmaray project the New Eurasian Land Bridge now theoretically connects to Europe via Central and South Asia. Proposed expansion of the Eurasian Land Bridge includes construction of a railway across Kazakhstan that is the same gauge as Chinese railways (standard gauge, as opposed to 1,520 mm gauge in the former Soviet Union), rail links to India, Burma, Thailand, Malaysia and elsewhere in Southeast Asia, construction of a rail tunnel and highway bridge across the Bering Strait to connect the Trans-Siberian to the North American rail system, and construction of a rail tunnel between South Korea and Japan. The United Nations has proposed further expansion of the Eurasian Land Bridge, including the Trans-Asian Railway project. History Commercial traffic between