The Jin'an Bridge is a suspension bridge near Lijiang, Yunnan, China. At 461 m (1,512 ft), it is the fourth highest bridge in the world. The bridge forms part of the G4216 Chengdu–Lijiang Expressway carrying traffic over the Jinsha River. The bridge construction began in 2016, the structure closed in January 2020[2] and it opened for traffic on 31 December 2020.[3] The main span of the bridge is 1,386 m (4,547 ft).[4]
Jin'an Bridge 金安金沙江特大桥 | |
|---|---|
| Coordinates | 26°49′20″N 100°26′30″E / 26.82222°N 100.44167°E |
| Carries | G4216 Chengdu–Lijiang Expressway  |
| Crosses | Jinsha River |
| Locale | Lijiang, Yunnan, China |
| Characteristics | |
| Design | Suspension |
| Material | Steel |
| Total length | 1,681 m (5,515 ft)[1] |
| Height | 230 m (750 ft) |
| Longest span | 1,386 m (4,547 ft)[1] |
| Clearance above | 461 m (1,512 ft) |
| History | |
| Construction start | 2016 |
| Opened | 31 December 2020 |
| Location | |
 | |
The bridge crosses the river 1.4 km upstream from the Jin'anqiao Dam. Due to the formation of the reservoir behind the dam, the full clearance to the original river level will not be visible.
Original design
editThe original design of the expressway crossed the Jinsha River 30 km (30,000 m) 20 km downstream at the village of Taku. The Taku Bridge was also a suspension bridge design. The original design was slightly higher crossing 512 m (1,680 ft) above the river and slightly shorter with a main span of the bridge 1,190 m (3,900 ft)
See also
editReferences
edit- ^ a b "金安金沙江大桥". ynglsj.com (in Chinese). 2017-01-03. Archived from the original on 2021-02-25.
- ^ "云南香丽高速公路虎跳峡金沙江特大桥合龙_图片新闻_中国政府网". www.gov.cn (in Chinese). Retrieved 2021-01-05.
- ^ "惠及百万群众，创多个世界之最，这段高速公路提前一年通车！_国内新闻_新闻中心_沈阳网". news.syd.com.cn (in Chinese). Retrieved 2021-01-05.
- ^ 国资委网站 (2020-01-16). "世界最大跨径山区悬索桥金安金沙江大桥合龙". news.sina.com.cn (in Chinese). Retrieved 2021-01-05.
External links
edit- Taku Bridge at Structurae
- Jinshajiang Bridge Jin'an on HighestBridges.com
- Jinshajiang Bridge Taku on HighestBridges.com
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