The Sitina tunnel is a part of 3,3 km long motorway D2 Lamačská cesta - Staré Grunty passing through Bratislava, the capital of the Slovak Republic. The double-tube Sitina city motorway tunnel has length of individual tubes 1 415 m and 1 440 m. By the completion of the tunnel with respective part of D2 motorway, the transport corridor was created via Bratislava to connect Czech Republic with Hungary and Austria.