Alpline-RZDstoy, a joint venture of Russian Railways and Alpine Bau, will undertake work on reconstructing railway tunnels on the Sochi to Matsesta line in Russia.
Under the agreement, a second track on the Sochi to Adler line of the North Caucasus Railway will be constructed.
The repair work will adhere to systems of quality control and environmental management based on international ISO 9000 and 14000 standards.
The project is scheduled for completion in 2012.