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Russky Island Bridge - World's longest cable-stayed bridge

Adapted from Wikipedia (12 November 2018)

The Russky Bridge is a cable-stayed bridge in Vladivostok, Primorsky Krai, Russia. The bridge connects the Russky Island and the Muravyov-Amursky Peninsula sections of the city across the Eastern Bosphorus strait, and with a central span of 1,104 metres, it is the longest cable-stayed bridge in the world. The Russky Bridge was originally built to serve the 2012 Asia-Pacific Economic Cooperation conference hosted at the Far Eastern Federal University campus on Russky Island. It was completed in July 2012 and opened by Prime Minister Dmitry Medvedev, and on September 3, 2012, the bridge was officially given its name.

The bridge to Russky Island is the world's longest cable-stayed bridge, with an 1104 m long central span.

The bridge also has the second highest pylons after the Millau Viaduct and the longest cable stays.

The design of the bridge crossing has been determined on the basis of two primary factors:

Shortest coast-to-coast distance in the bridge crossing location 1460 m. Navigable channel depth is up to 50 m.

The locality of the bridge crossing construction site is characterized by severe climate conditions: temperatures vary from -31 °C to 37 °C; storms bring winds of up to 36 m/s and waves of up to 6 m in height; and ice formations in winter can be up to 70 cm thick.

Central span structure:

The span structure has an aerodynamic cross-section to assume gusting wind loads. The shape of the span cross-section has been determined based on aerodynamic design and optimized according to the results of experimental processing of the scale model in the detailed design phase.

Welded field connections are used for longitudinal and transversal joints of the cap sheet of the orthotropic deck and lower ribbed plate. For joints of vertical walls of the blocks, longitudinal ribs, transversal beams and diaphragms, field connections are used provided by means of high-strength bolts.

Large-sized prefabricated sections for the installation of the central span were delivered by barges to the erection site and hoisted by a crane to a 76 m height. Here, the elements were abutted and cable stays attached to them.

Cable-stayed system:

A cable-stayed system assumes all static and dynamic loads on which the very existence of the bridge depends. Cable stays are not designed to endure the entire lifetime of the bridge, but they are repairable and have the best possible protection from natural disasters and other adverse impacts. PSS cable stays consist of parallel strands of 15.7 mm diameter; every strand consists of seven galvanized wires. Cable stays incorporate from 13 to 79 strands. The length of the shortest cable stay is 135.771 m; the longest, 579.83 m. The protective housings of the cable stays are made from HDPE and have the following features: UV resistance; resistance to local climate conditions of Vladivostok (temperature range from minus 40 °C to plus 40 °C) and environmental aggressiveness.

Watch video footage of the bridge project

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