The Osmangazi Bridge ( Turkish : Osmangazi Köprüsü ) is a suspension bridge spanning the Gulf of İzmit at its narrowest point, 2,620 m (8,600 ft). The bridge links the Turkish city of Gebze to the Yalova Province and carries the O-5 motorway across the gulf.
16-547: The bridge was opened on 1 July 2016 to become the then-longest suspension bridge in Turkey and the fourth-longest (seventh-longest as of 2023) suspension bridge in the world by the length of its central span . The length of the bridge was surpassed by the Çanakkale 1915 Bridge across the Dardanelles strait, which became the longest suspension bridge in the world when it was opened on 18 March 2022. Construction and operation of
32-425: A structural member (e.g., a beam ). Span is measured in the horizontal direction either between the faces of the supports ( clear span ) or between the centers of the bearing surfaces ( effective span ): A span can be closed by a solid beam or by a rope. The first kind is used for bridges, the second one for power lines , overhead telecommunication lines, some type of antennas or for aerial tramways . Span
48-458: A motorcycle speed trial in the early morning of 30 June 2016, right before the official opening of the bridge. He crossed the 1.5 km (0.93 mi) distance in 26 seconds reaching a top speed of 400 km/h (250 mph) on his Kawasaki Ninja H2R track-only motorcycle. List of longest suspension bridge spans#Completed suspension bridges Download coordinates as: The world's longest suspension bridges are listed according to
64-447: Is a significant factor in finding the strength and size of a beam as it determines the maximum bending moment and deflection . The maximum bending moment M m a x {\displaystyle M_{max}} and deflection δ m a x {\displaystyle \delta _{max}} in the pictured beam is found using: where The maximum bending moment and deflection occur midway between
80-449: The bridge is longer from shore to shore (or from abutment to abutment). Suspension bridges have the longest spans of any type of bridge. Cable-stayed bridges , the next longest design, are practical for spans up to just over 1 kilometre. Therefore, as of 2021 , the 31 longest bridges on this list are the 31 longest spans of all types of vehicular bridges (other than floating pontoon bridges ). The 1915 Çanakkale Bridge in Turkey holds
96-517: The bridge was awarded to a joint venture (NOMAYG JV) formed by five Turkish companies ( Nurol , Özaltın, Makyol, Yüksel and Gocay) and one Italian construction company Astaldi following the international Build–operate–transfer tender that took place in April 2009. In 2010, a contract was signed for the project that was estimated to cost ₺ 11 billion for the entire highway from Gebze to Bursa . On 30 March 2013 Prime minister Recep Tayyip Erdoğan laid
112-468: The bridge was obtained from Liberty Galați , Romania. The bridge is fourth longest suspension bridge in the world . On 21 March 2015 a catwalk broke away from its bolted joint cable on the south tower during the construction at the bridge and fell into the water. Added in February 2015, the catwalk was needed to allow workers access to the other side of the bay. No one was harmed by the accident as work
128-456: The entrance of a cemetery near his lodging in Altınova . He left a note saying that "...this failure ends my private and professional life. This project was mine and my country's pride. No one else is responsible for this failure." As of 13 May 2023 the bridge tolls are (forex rate of 15 June 2023: USDTRY=23.67): The five-time Supersport World champion Kenan Sofuoğlu from Turkey made a show of
144-491: The ground stone for the bridge. After the completion of the bridge, the distance between Istanbul and İzmir shortened by about 140 km (87 mi), bypassing the lengthy distance around the Gulf of İzmit . The 420 km (260 mi) highway and bridge reduced the travel time between the two major cities from around six hours to five. The bridge and connecting highway provides three lanes of traffic in each direction. Construction
160-1552: The large suspension bridges built in recent years have been in the People's Republic of China. As the following list shows, most of the bridges under construction are also in China. 张靖皋长江大桥南航道桥 狮子洋大桥 ( Guangdong ) 22°51′3″N 113°33′56″E / 22.85083°N 113.56556°E / 22.85083; 113.56556 ( Shiziyang Bridge ) 燕矶长江大桥 双屿门特大桥 泸沽湖特大桥 小湾澜沧江特大桥 大东金沙江特大桥 23°15′22″N 102°50′06″E / 23.25611°N 102.83500°E / 23.25611; 102.83500 ( Honghe Bridge ) 西堠门公铁两用大桥 双柳长江大桥 花江峡谷大桥 永昌澜沧江大桥 26°39′51″N 104°50′5″E / 26.66417°N 104.83472°E / 26.66417; 104.83472 ( Dahe Bridge ) 江龙高速复兴长江大桥 张靖皋长江大桥北航道桥 雅砻江特大桥 乌东德金沙江特大桥 李埠长江公铁大桥 30°17′13″N 112°04′42″E / 30.28694°N 112.07833°E / 30.28694; 112.07833 ( Libu Yangtze River Rail and Road Bridge ) 兴义长江公铁大桥 21°45′18″N 108°33′16″E / 21.75500°N 108.55444°E / 21.75500; 108.55444 ( Longmen Bridge ) 26°10′02″N 105°06′45″E / 26.16722°N 105.11250°E / 26.16722; 105.11250 ( Zangkejiang Bridge ) 卡哈洛金沙江特大桥 Prior longest bridges are located in List of longest arch bridge spans . Exceeded by
176-413: The length of their main span (i.e., the length of suspended roadway between the bridge's towers). The length of the main span is the most common method of comparing the sizes of suspension bridges , often correlating with the height of the towers and the engineering complexity involved in designing and constructing the bridge. If one bridge has a longer span than another, it does not necessarily mean that
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#1733086294847192-407: The masonry arch Trezzo sull'Adda Bridge from 1377 to 1416, with main span of 72 m. The first suspension bridge to have a concrete deck. The construction methods pioneered in building it would make possible several much larger projects to follow. Sources: Span (architecture) In engineering , span is the distance between two adjacent structural supports (e.g., two piers ) of
208-1508: The record since opening to traffic in March 2022, with a span of 2,023 metres (6,637 ft). Since 1998, the Akashi Kaikyo Bridge in Japan previously held the record with a span of 1,991 metres (6,532 ft). This list includes only completed suspension bridges that carry automobiles or trains that are at least 1,000 m (3,300 ft) long. It does not include cable-stayed bridges, footbridges , or pipeline bridges . ( Jiangsu ) 32°12′24.6″N 119°21′49.9″E / 32.206833°N 119.363861°E / 32.206833; 119.363861 ( Runyang Bridge ) 26°49′20″N 100°26′30″E / 26.82222°N 100.44167°E / 26.82222; 100.44167 ( Jin'an Bridge ) ( Jiangsu ) 31°56′43.1″N 120°16′10″E / 31.945306°N 120.26944°E / 31.945306; 120.26944 ( Jiangyin Suspension Bridge ) ( Sichuan ) 30°37′03″N 111°21′37″E / 30.61750°N 111.36028°E / 30.61750; 111.36028 ( Wujiagang Bridge (Guangxi) ) 27°11′59″N 107°05′14″E / 27.19972°N 107.08722°E / 27.19972; 107.08722 ( Haizhouhu Bridge (Guangxi) ) Most of
224-540: Was completed on 30 June 2016. Two lanes of high-speed railway were also planned to run through the middle of the bridge, but were scrapped in favor for a fourth lane for both ways. The decision lead to criticism and sparked people being suspicious of politicians being involved with automobile lobbyists. The US$ 1 billion privately financed bridge was awarded to the Japanese firm IHI Infrastructure System Co. on 16 July 2011 as EPC basis with FIDIC Silverbook contract. IHI, which
240-451: Was interrupted at this section due to windy weather. Marine traffic to and from İzmit Bay was suspended following the accident for security reasons and resumed after recovering the cable in the morning of 23 March. Kishi Ryoichi, the 51-year-old Japanese engineer of the IHI - Itochu Consortium, who was in charge of the construction at site, committed suicide after the accident. He was found dead at
256-474: Was one of the contractors of second Bosphorus bridge, also completed the seismic reinforcement projects for Halic and Mecidiyekoy viaducts. IHI subcontracted the design works to Danish engineering design firm COWI A/S , which collaborated for the aesthetic design with Dissing+Weitling . Notice to proceed was given by NOMAYG JV to IHI on 1 January 2013 and the expected total project duration was 37 months. The dimensions are: The 34,000 tons of steel used to build
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