The fill dam of the Flood Protection Barrier is 25.4km-long and is situated in Gulf of Finland. This dam is part of St Petersburg Ring Road.

The dam is equipped with six water sluices B1-B6 and two navigation structures C-1 and C-2, which at the same time leak the water. The width of the water reaches a total length of 1536m that is 1.5 times wider than the mouth of the Neva River.

Transmost PLC made a contribution into this project. The company has designed the following structures:

All the structures are designed for 6-lane highway.

The opening for traffic was in 2011.