The transportation infrastructure being prepared to support the Olympics includes many roads, tunnels, bridges, interchanges, railroads and stations in and around Sochi. The Sochi Light Metro will be constructed between Adler and Krasnaya Polyana to connect the Olympic Park, the airport and the venues in Krasnaya Polyana.[29] The existing 102 km Tuapse to Adler railroad will be reconstructed to provide double track throughout, increasing capacity and enabling a reliable regional service to be provided. The railroad will also be extended to the airport. In December 2009 Russian Railways ordered 38 Siemens Mobility Desiro trains for delivery in 2013 for use during the Olympics, with an option for a further 16 which would be partly built in Russia.[30] Russian Railways is going to establish a high-speed Moscow-Adler link and a new railroad (more than 60 km long) passing by the territory of Ukraine.[31] At the Sochi airport, a new terminal has been built and a 3.5 km (2.2 mi) runway extension is planned, possibly overlapping Mzymta river.[32] Backup airports will be built in Gelendzhik, Mineralnye Vody and Krasnodar by 2009.[33] At the Sochi sea port, a new offshore terminal will be constructed 1.5 km (0.93 mi) from the shore to allow docking for cruise ships with capacities of 3000 passengers.[34] The cargo terminal of the sea port is to be moved from the Sochi centre. Road ways will be detoured, some going around the construction site and others being cut off.[35] In May 2009 Russian Railways started the construction of tunnel complex No.1 (the total will be six) on the combined road (automobile and railway) from Adler to Alpica Service Mountain Resort in Krasnaya Polyana region. The tunnel complex No.1 is located near Akhshtyr settlement in Adlersky City District, and includes:[36] Escape tunnel, 2.25 km, completed in 2010 Road tunnel, 2153 m, to be completed in Q1 2013 One-track railway tunnel, 2473 m, to be completed in Q2 2013 Russian Railways president Vladimir Yakunin said the road construction will cost more than 200 billion rubles. Sochi International Airport (IATA: AER, ICAO: URSS) (Russian: Международный Аэропорт Сочи) is an airport located in Adler District of the resort city of Sochi, on the coast of the Black Sea in the federal subject of Krasnodar Krai, Russia. The operator of the airport is JSC International, which is part of the aviation holding company Basic Element Aero. As of 2010, the airport is the eighth busiest airport in Russia, serving 1.9 million passengers. The airport serves Sochi, Russia's largest resort, as well as the surrounding area, which has a total permanent population of more than 700,000 people.