On Friday 12 August in St. Petersburg was the opening ceremony of the complex for defenses the city from flooding. The ceremony took part Prime Minister Vladimir Putin, Deputy Prime Minister Dmitry Kozak and St. Petersburg Governor Valentina Matvienko. From this day was opened to traffic through the tunnel complex defenses of Saint Petersburg. Since then, the dam is considered complete. From this day you can drive around the city by the St. Petersburg ring road.
Construction of structures protective Petersburg from floods was conducted from 1979. The complex has a length of 25 kilometers on the Gulf of Finland. It consists of 11 dams, two navigation pass and six culverts, six-lane highway, which was started by a dam and an underwater tunnel. Dams connect by motorway northern and southern parts of Saint Petersburg throw Kotlin Island (city Kronshtadt). The length of the tunnel is about 2 kilometers. He has on three lanes of cars in both directions. The tunnel is laid at a depth of 25 meters.
Now, when a tunnel under the Gulf of Finland built, St. Petersburg bypass road length has reached 140 kilometers. In the coming years will be build a second bypass road around the city of St. Petersburg.