Saint Petersburg Ring Road

The Saint Petersburg Ring Road (Russian: Кольцева́я автомоби́льная доро́га вокру́г г. Санкт-Петербу́рга, Koltsevaya avtomobilnaya doroga vokrug g. Sankt-Peterburga, abbreviated КАД, KAD) is a 142 km (88 mile) orbital freeway encircling Saint Petersburg, Russia. It is the only beltway around the city. The St. Petersburg Ring Road in the Russian road numbering system is listed as the federal public road A-118.

The need for the construction of a beltway around St. Petersburg was first stated in the 1965 General Development Plan of Leningrad. The western segment of the road was planned to be constructed as a causeway part of a proposed flood-protection dam on the Gulf of Finland. In late 1979, the 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 the Kotlin Island. However, any further development of the dam and the Ring Road project was halted in 1992 due to the lack of financing in the midst of economic turmoil in Russia.

The construction of the Ring Road was resumed in 1998. The first freeway section of the Ring Road connecting the north terminus of the dam, near the Gorskaya train station, with the northern outskirts of St. Petersburg at Vyborgsky District was opened on December 26, 2002. By September 2006, the freeway segments of the Ring Road completed the eastern bypass around St. Petersburg with grade-separated junctions with the E-18/A-181 route in the northern segment, E-105/R-21 route in the eastern segment and E-105/M-10 route in the southern segment of the Ring Road. The completed part of the Ring Road included the cable-stayed Bolshoy Obukhovsky Bridge, the only non-bascule bridge across the main branch of the Neva River.

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