S37 Lankao–Xuchang Expressway

none Expressway
Lanxu Expressway 兰许高速公路
Route information
Length	120 km (75 mi)
Existed	2005–present
Major junctions
Northeast end	Lankao West Interchange connecting G30 / G1511 in Lankao, Kaifeng, Henan
Major intersections	Henan S82 (S82) in Xiangfu District, Kaifeng G45 in Tongxu County, Kaifeng Henan S60 (S60) in Weishi County, Kaifeng G0424 in Weishi County, Kaifeng Henan S42 (S42) in Yanling, Xuchang (under construction)
Southwest end	Xuchang East Interchange connecting G1516 in Jian'an District, Xuchang
Location
Country	China
Province	Henan
Highway system
Transport in China

The Lankao–Xuchang Expressway (Chinese: 兰考－许昌高速公路), often abbreviated as Lanxu Expressway (Chinese: 兰许高速) and designated as S37 in Henan's expressway system, is a 114-kilometre (71 mi) long regional expressway in Henan, China. Currently it's fully completed.

History

Before July 8, 2024, this expressway was a part of Lannan Expressway (Chinese: 兰南高速公路) which started at Lankao and ended at Nanyang. The first phase of the expressway is from Xuchang to Nanyang via Pingdingshan and was called as Xupingnan Expressway (Chinese: 许平南高速公路). This section was opened on 12 December 2004 and provided expressway connections to the above-mentioned three major cities in Henan.^[1] The second phase (Lankao–Xuchang section, called Lanxu Expressway) was opened on 19 November 2005.^[2] The third phase was opened on December 19, 2005.^[3][4]

The Xuchang–Ye County section has also been designated as G0421.

On July 8, 2024, the latest version of Henan Expressway numbering was released by Henan Provincial Department of Transportation.^[5] The previous Henan S83 (Lankao–Nanyang Expressway) was abolished. Instead, the Ye County-Nanyang section was redesignated as G3612, and the name Lanxu Expressway was restored on Lankao-Xuchang section.

Exit list

From northeast to southwest:

Location	km	mi	Exit	Name	Destinations	Notes
Henan S83 (Lankao–Nanyang Expressway)
Continues northeast towards Heze as G1511
Xiangfu District, Kaifeng	0	0	0 A-B	Lankao West Interchange	G30 – Kaifeng, Shangqiu G1511 – Heze
	10.8	6.7	11	Erlangmiao	Henan S213 – Erlangmiao, Qixian
	Chenliu Parking Area
				Qiulou Interchange	Henan S82 (S82) – Kaifeng, Minquan
Tongxu County, Kaifeng			34	Zhusha Interchange	G45 – Puyang, Zhoukou	No ramp towards northbound G45 for westbound S37 and vice versa
	40.9	25.4	41	Tongxu	G240 (Yingbin Avanue) / Henan S222 – Tongxu
	Tongxu Service Area
Weishi County, Kaifeng				Weishi East Interchange	Henan S60 (S60) – Xinzheng, Shangqiu
	59	37	59	Weishi	G240 – Weishi
				Weishi South Interchange	G0424 – Zhongmu, Zhoukou
Yanling County, Xuchang	90.8	56.4	91	Yanling North	Henan S319 – Pengdian
	92	57	92	Xiefang Interchange	Henan S42 (S42) – Yongcheng, Lingbao	Under construction
	Yanling Service Area
	102.2	63.5	102	Yanling West	G311 (Huadu Avenue) – Yanling
Jian'an District, Xuchang				Xuchang East Interchange	G1516 – Xuchang, Luoyang	Westbound exit and eastbound entrance only
Continues southwest towards Xuchang as G1516
Closed/former       Concurrency terminus       HOV only       Incomplete access        Tolled       Route transition       Unopened

References

1. "许平南高速建成通车_新闻中心_新浪网". news.sina.com.cn. Archived from the original on 2022-10-06. Retrieved 2022-10-06.
2. "兰(考)许(昌)高速公路建成通车 总投资50亿元". www.gov.cn. Archived from the original on 2007-01-04. Retrieved 2022-10-06.
3. "南邓高速公路昨日通车_新闻中心_新浪网". news.sina.com.cn. Archived from the original on 2022-10-06. Retrieved 2022-10-06.
4. "南阳人有能力建"高速"——写于南邓高速公路建成通车之际_新闻中心_新浪网". news.sina.com.cn. Archived from the original on 2022-10-06. Retrieved 2022-10-06.
5. "河南省交通运输厅关于印发河南省高速公路网路线命名编号调整方案的通知" (in Chinese). Retrieved 2024-07-18.