Construction was conducted from 1979 to 2011, the cost of the project as of the first ten days of August 2010 was 87.3 billion rubles. According to the design of the Dam in 1970, which will start from Gorskaya, the construction period is 8 years, length 22 km, height 11 m.
A complex of defensive structures against floods a complex of dams and hydraulic structures (culverts and passageways) across the Gulf of Finland from Bronka to Sestroretsk, through the island of Kotlin (the city of Kronstadt).
The complex of protective structures includes 11 defensive dams (D-1 to D-11), 6 culverts (B-1 to B-6), two navigable structures (C-1 and C-2) and a six-lane motorway a crest of protective dams, with bridges, a tunnel and traffic junctions. The numbering of the buildings goes from Bronchi to Gorskaya (from the south-west to the northeast). The total length of the dams is 23.4 km.
Having received information from the Flood Warning System on raising the water level, the Directorate of the GLC advises the Administration of the Big Port about the threat of flooding and stopping navigation in advance (for 3 hours). Preparations begin to maneuver the gates of all protective structures. In case of a flood threat, the shutters of the C-1 and S-2 navigational structures are closed first, and then the culverts of the culverts (B-1-B-6).
Under the navigable canal passes an underground six-lane automobile tunnel with a total length of 1961 m. The lowest point of the tunnel is located at a mark - minus 28 m.