Jiaozhou Bay Bridge

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Jiaozhou Bay Bridge
Jiaozhou-Bay-Bridge.jpg
Coordinates36°10′12″N 120°17′54″E / 36.169913°N 120.298305°E / 36.169913; 120.298305Coordinates: 36°10′12″N 120°17′54″E / 36.169913°N 120.298305°E / 36.169913; 120.298305
CarriesMotor vehicles
CrossesJiaozhou Bay
Localebetween Qingdao and Huangdao District, China
Characteristics
DesignSelf-anchored suspension bridge and Cable-stayed bridge
MaterialPrestressed concrete
Total length26.707 kilometres (16.595 mi)[1]
Width35 m (115 ft)
Longest spanCangkou Channel Bridge:
260 m (850 ft)
Clearance below190 m × 40.5 m (623 ft × 133 ft)
History
DesignerShandong Gaosu Group
Construction startlate 2007
Construction endearly 2011
Construction costCN¥10 to 55 billion[2]
Opened30 June 2011
Location
Jiaozhou Bay Bridge
Simplified Chinese胶州湾大桥
Traditional Chinese膠州灣大橋
Literal meaningJiaozhou Bay Bridge

Jiaozhou Bay Bridge (or Qingdao Haiwan Bridge) is a 26.7 km (16.6 mi) long roadway bridge in eastern China's Shandong province, which is part of the 41.58 km (25.84 mi) Jiaozhou Bay Connection Project.[1] The longest continuous segment of the bridge is 25.9 km (16.1 mi),[3] making it one of the longest bridges in the world.

Description[]

The Jiaozhou Bay Bridge transects Jiaozhou Bay, which reduces the road distance between Qingdao and Huangdao by 30 km (19 mi), compared with the expressway along the coast of the bay, reducing travel time by 20 to 30 minutes.[4] The design of the bridge is T-shaped with the main entry and exit points in Huangdao and the Licang District of Qingdao. A branch to is connected by a semi-directional T interchange to the main span.[5] The construction used 450,000 tons of steel and 2.3 million cubic metres (81×10^6 cu ft) of concrete.[4] The bridge is designed to be able to withstand severe earthquakes, typhoons, and collisions from ships.[4] It is supported by 5,238 concrete piles.[6] The cross section consists of two beams in total 35 m (115 ft) wide carrying six lanes with two shoulders.

The Jiaozhou Bay Bridge has three navigable sections: the Cangkou Channel Bridge to the west, the Dagu Channel Bridge to the east, and the Hongdao Channel Bridge to the north. The 600 metres (2,000 ft) long Cangkou Channel Bridge has the largest span of the entire Jiaozhou Bay Bridge, 260 m (850 ft). The Hongdao Channel Bridge has a span of 120 m (390 ft). The non-navigable sections of the bridge have a span of 60 m (200 ft).[1]

Length[]

The length of the Jiaozhou Bay Bridge is 26.7 km (16.6 mi), of which 25.9 km (16.1 mi) are over water, representing the aggregate length of three legs of the bridge.[1][7]

The Jiaozhou Bay Bridge is part of the Jiaozhou Bay Connection Project, which includes overland expressways and the Qingdao Jiaozhou Bay tunnel. The aggregated length of the project is 41.58 km (25.84 mi), which is by many sources listed as length of the Jiaozhou Bay Bridge.[4][8][9][10]

The Jiaozhou Bay Connection Project consists of two non-connected sections: a 35.4 km (22.0 mi)-long expressway that includes the Jiaozhou Bay Bridge and a 6.17 km (3.83 mi)-long expressway that includes the Qingdao Jiaozhou Bay Tunnel.[3]

The 35.4 km (22.0 mi) section is further broken into multiple parts:[3]

  • 26.7 km (16.6 mi) - Jiaozhou Bay Bridge of which 25.9 km (16.1 mi) is over water in the aggregate of three legs.
  • 5.85 km (3.64 mi) - Qingdao side land bridge
  • 0.9 km (0.56 mi) - Huangdao side land bridge
  • 1.9 km (1.2 mi) - Hongdao Island connection

Records[]

After the bridge opened, Guinness World Records listed it at 41.58 km (25.84 mi), which made it the longest bridge over water (aggregate length). The Guinness title was taken by the Hong Kong-Zhuhai-Macau Bridge in October 2018.[11]

The bridge builder Shandong Gaosu Group claimed that Jiaozhou Bay Bridge had the first oversea interchange in the world and that it has the world's largest number of oversea bored concrete piles.[6][12]

History[]

The bridge was the idea of a local official in the Chinese Communist Party who was subsequently dismissed for corruption.[13] It was designed by the Shandong Gaosu Group. It took four years to build, and employed at least 10,000 people.[4] It opened on 30 June 2011 for traffic.[8]

The Qingdao Jiaozhou Bay tunnel opened on the same day as the bridge.[5][3] It transects Jiaozhou Bay, also connecting Huangdao District and the city of Qingdao, between the narrow mouth of the bay, which is 6.17 km (3.83 mi) wide. The tunnel travels underground for 5.55 km (3.45 mi).[14]

Concerns regarding the bridge's safety were raised when Chinese media reported that the bridge was opened with faulty elements, such as incomplete crash-barriers, missing lighting, and loose nuts on guard-rails, with workers stating that it would take two months before finishing all of the projects related to the bridge.[15] Shao Xinpeng, the bridge's chief engineer, claimed that in spite of the safety report, the bridge was safe and ready for traffic, adding that the problems highlighted in the reports were not major.

The bridge was reported by the official state-run television company CCTV to cost CN¥10 billion (US$1.5 billion, GB£900 million). Other sources reported costs as high as CN¥55 billion (US$8.8 billion, GB£5.5 billion).[2]

See also[]

References[]

  1. ^ a b c d "青岛海湾大桥设计创新技术 en: Qingdao Bay Bridge Design-Innovation-Technologie". wutancn.com. 2013. Archived from the original on 6 January 2013. Retrieved 4 July 2012.
  2. ^ a b Staff writers (30 June 2011). "A marathon span: China opens world's longest bridge over water". NBC News. Retrieved 11 May 2012.
  3. ^ a b c d "Jiaozhou Bay Connection Project" (in Chinese). Retrieved 10 December 2012.
  4. ^ a b c d e David Eimer (8 January 2011). "China builds world's longest bridge". The Daily Telegraph. Retrieved 1 July 2011.
  5. ^ a b "Qingdao bridge sets world record". China Economic Net. 1 July 2011. Retrieved 1 July 2011.
  6. ^ a b "Innovation of Qingdao Bay Bridge", accessed 5 July 2012
  7. ^ Brief Introduction to QingDao Bay Bridge, accessed 5 July 2012
  8. ^ a b An (30 June 2011). "World's longest cross-sea bridge opens in east China". Xinhua. Retrieved 1 July 2011.
  9. ^ Uri Friedman (30 June 2011). "A Visual Tour of the World's Longest Sea Bridge". The Atlantic Wire. Retrieved 1 July 2011.
  10. ^ Staff writers (30 June 2011). "A marathon span: China opens world's longest bridge over water". NBC News. Retrieved 1 July 2011.
  11. ^ "Longest bridge over water (aggregate length)". Guinness World Records. 23 October 2018. Retrieved 23 October 2018.
  12. ^ "海湾大桥建设有新进度海上钻孔出创三项纪录 (Bay Bridge construction progress of offshore drilling invasive three records)" (in Chinese). China Highway. Retrieved 10 December 2012.
  13. ^ Rabinovitch, Simon (16 July 2012). "China: The road to nowhere". The Financial Times. Retrieved 11 August 2012.
  14. ^ "Jiaozhou bay Tunnel in Qingdao". STEC. 8 March 2012. Archived from the original on 12 January 2013. Retrieved 5 July 2012.
  15. ^ Staff writers (7 July 2011). "China's record-breaking Jiaozhou bridge 'is safe'". BBC News. Retrieved 11 May 2012.
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