The world's largest cable stayed bridge

The world's longest cable-stayed bridge is the Russky Bridge in Vladivostok, Russia1. Here is an introduction to it:

• Basic information: The Russky Bridge has a total length of 3,100 meters and a central span of 1,104 meters. It connects the Russky Island and the Muravyov-Amursky Peninsula sections of the city across the Eastern Bosphorus Strait.
• Construction background: It was originally built to serve the 2012 Asia-Pacific Economic Cooperation Conference hosted at the Far Eastern Federal University campus on Russky Island.
• Design and structure: The bridge has the second-highest pylons in the world after the Millau Viaduct. The design of the bridge was determined by several factors, including minimizing the coast-to-coast distance of 1,460 metres and the navigable channel depth of up to 50 meters. The locality also has severe climate conditions, with temperatures varying from –31 to +37 °C, storms bringing winds of up to 36 m/s, waves up to 6 meters in height, and ice formations in winter up to 70 cm thick.
• Significance: The completion of the Russky Bridge is a remarkable achievement in bridge construction. It not only provides a crucial transportation link for the city of Vladivostok, ensuring smooth traffic all year round between the mainland and the island, but also showcases Russia's advanced engineering capabilities and infrastructure development level1

The Russky Bridge in Vladivostok, Russia, is not only the world's longest cable-stayed bridge but also features several remarkable architectural characteristics:

1. Towering Pylons: The bridge has two extremely tall A-shaped pylons that rise to a height of 320.9 meters. This height is second only to the Millau Viaduct in France and makes the bridge a dominant feature in the landscape. The A-shape of the pylons is not only an aesthetic choice but also provides excellent structural stability, enabling them to withstand the various forces acting on the bridge, such as the weight of the deck, the tension of the cables, and the strong winds in the area1.
2. Impressive Spans: With a central span of 1,104 meters, it is a true feat of engineering. This long span allows for unobstructed passage of ships below, with a clearance of 70 meters from the water surface. The long span also requires the use of a large number of high-strength cables to support the deck. In total, there are 130 cables, with the longest one reaching 483 meters. These cables are attached to the pylons and the deck at various points, distributing the load evenly and ensuring the stability of the bridge12.
3. Unique Deck Design: The deck of the bridge is designed to be both functional and aesthetically pleasing. It is made of a combination of steel and concrete, with a total weight of 23,000 tons. The deck is 29.5 meters wide, providing four lanes for traffic (two lanes in each direction), allowing for smooth traffic flow. The design of the deck also takes into account the harsh local climate conditions, such as strong winds, storms, and temperature variations.
4. Aerodynamic Shape: The overall structure of the bridge has an aerodynamic cross-section. This design helps the bridge to withstand the strong winds and wind loads in the area, reducing the impact of wind on the stability of the bridge. The aerodynamic shape also enhances the visual appeal of the bridge, making it a beautiful sight from both near and far1.
5. Advanced Construction Techniques: The construction of the Russky Bridge involved the use of advanced techniques and technologies. For example, the self-climbing formwork was used in the construction of the pylons, which allowed for efficient and precise construction. The cables and the main girder were installed simultaneously, ensuring the proper alignment and tension of the cables.
6. Durable Materials: To ensure the durability of the bridge in the harsh marine environment, high-quality materials were used. The cables are coated with high-density polyethylene to protect them from ultraviolet radiation and corrosion. The use of prestressed concrete in the deck and other parts of the bridge also enhances its durability and strength

The Russky Bridge, located in Vladivostok, Russia, is an extraordinary engineering marvel.

Basic Information:

• It is one of the most impressive cable-stayed bridges in the world. With a total length of 3,100 meters and a central span of 1,104 meters.
• The bridge connects the Russky Island and the Muravyov-Amursky Peninsula sections of the city across the Eastern Bosphorus Strait.

Design and Structure:

• The bridge features extremely tall pylons. Standing at a height of 320.9 meters, these A-shaped pylons are among the tallest in the world. The pylons provide excellent structural stability and are designed to withstand the harsh local conditions.
• The bridge has a total of 130 cables, which are attached to the pylons and the deck. These high-strength cables help distribute the load and support the massive deck.
• The deck is designed to handle heavy traffic and is made of a combination of steel and concrete. It is 29.5 meters wide and provides four lanes for traffic.

Significance:

• The Russky Bridge was built to serve important transportation needs. It provides a crucial link between the mainland and Russky Island, facilitating the development of the area.
• It is also a symbol of Russia's advanced engineering capabilities and infrastructure development. The bridge has become an iconic landmark of Vladivostok, attracting tourists from around the world.
• The construction of the bridge was a major undertaking that required advanced technologies and expertise. It showcases Russia's ability to undertake large-scale infrastructure projects and overcome complex engineering challenges.