G2201 Lanzhou Ring Expressway

The Lanzhou South Ring Expressway (Chinese: 兰州南绕城高速; pinyin: Lánzhōu Nán Ràochéng Gāosù), designated G22₀₁, is a 58.743-kilometre-long expressway (36.501 mi) that bypasses the built-up area of Lanzhou on the south side, the capital of Gansu Province. The design speed of the road is 80 kilometres per hour (50 mph).[1] Construction started in 2014[2] and the Expressway was opened on 29 December 2018.[3] The construction cost was budgeted at 11.8 billion yuan.[2]

Lanzhou Ring Expressway
兰州绕城高速公路
Route information
Length	58.743 km (36.501 mi)
Existed	2018–present
Major junctions
	G22 Yuzhong County G309 in Heping, Yuzhong G75 in Xiguoyuan, Qilihe District Nanshan Road in Xigu District G6 in Xigu District
Highway system
National Trunk Highway System Primary Auxiliary China National Highways Transport in China ← G2012 → G2211

Together with the northern bypass formed by G6 Beijing–Lhasa Expressway and G30 Lianyungang–Khorgas Expressway, it forms a full Expressway Ring Road around Lanzhou. The Lanzhou North Ring Road forms an inner ring road, although it is not built to Expressway standards. Before opening of the Expressway, all traffic from the directions of Linxia and Lintao County over G75 Lanzhou–Haikou Expressway terminated in the built up area of Lanzhou with few grade-separated junctions.[4] The terminus of G75 is at a toll station on a long downward slop, with many hundreds of incidents involving brake failure of heavy trucks taking place. Heavy trucks are since required to use the Ring Expressway, avoiding the hazardous situation.[5]

Lanzhou South Service Area is the largest service area in Gansu province.[6]

Engineering works

External image
Xigu Yellow River Bridge

The expressway runs through mountainous loess landscape. The road runs over 20 bridges, and through 17 tunnels, 58.4% of the length is made up by bridges and tunnels.[2] By far the largest bridge is Xigu Yellow River Bridge, a 1,003 metres (3,291 ft) long dual-tower cable-stayed bridge crossing the Yellow River at 70 metres (230 ft) above the water.[7]

Exit list

Location	km	mi	Exit	Name	Destinations	Notes
Yuzhong County, Lanzhou			C1	Dingyuan Interchange	G22
			7	Heping South	G309
Qilihe District, Lanzhou	Lanzhou South Service Area
			24	Xiguoyuan	G75	HGV may only exit southbound
Xigu District, Lanzhou			37	Xigu Nanshan Road
			56	Huangyanggou Interchange	G6
Closed/former       Concurrency terminus       HOV only       Incomplete access       Tolled       Route transition       Unopened

References

1. "定了！兰州南绕城高速12月29日通车，先看视频提前感受一下". new.qq.com.
2. "兰州南绕城高速公路建成 畅通东西南北缓解交通压力-中新网". www.chinanews.com.
3. "兰州南绕城高速公路今日正式通车-新华网". www.xinhuanet.com.
4. "年底南绕城高速公路建成后，大货车不再由兰州南收费站进市区_中国政库_澎湃新闻-The Paper". www.thepaper.cn.
5. "Traffic safety assessment in Lanzhou released - Chinadaily.com.cn". www.chinadaily.com.cn.
6. http://gansu.gscn.com.cn/system/2018/12/26/012091559.shtml
7. "兰州南绕城高速西固黄河大桥成"型"". gansu.gansudaily.com.cn. 2016-11-07.

See also