The western segment of the road was planned to be constructed as a causeway forming part of a proposed flood-protection dam in the Gulf of Finland.

In late 1979, construction of the dam facilities commenced and by the early 1990s a two-lane road connected the northern shore of the Gulf of Finland with the city of Kronstadt on Kotlin Island.

The south-western and western sections of the Ring Road, including the dam facilities and the intersection with the E-20/A-180 route, were gradually constructed throughout the late 2000s.

The six-lane causeway across the Gulf of Finland includes bridges, trestles, man-made islands, and a tunnel under the main shipping channel.

After more than two decades of construction, the completed Ring Road was officially opened on 12 August 2011 by the Russian Prime Minister, Vladimir Putin, and the Governor of St Petersburg, Valentina Matvienko, who inaugurated the dam facilities.