Mengzi – Wenshan – Yanshan Expressway
The Mengzi-Wenshan-Yanshan Expressway is a vital component of Yunnan Province’s transportation network, connecting the Red River and Wenshan prefectures and extending to developed coastal areas in Guangxi. It plays a crucial role in Yunnan’s “Three North-South and Three East-West” and “Nine Key Passages” plans, enhancing economic connectivity from southern Yunnan to the sea.
Route Information
Starting Point: South of Mengzi
Termination: Qiubei-Yanshan Expressway junction
Total Length: 130.452 kilometers
Key Locations: Mengzi, Wenshan, Yanshan
The expressway intersects with major routes like the Guangzhou-Kunming Expressway (G80), facilitating efficient regional transportation.
Mengzi Section
Starting east of Mengzi city, this segment connects with the Tianhou Expressway, passing through key points in Wenshan Prefecture before integrating with the Erhe Expressway towards Hekou.
Wenshan Section
This segment passes through important locations like Laohuilon, Matang, and Sanjiaotang, intersecting with the G80 before terminating at the planned Qiubei-Yanshan Expressway.
Basic Information
- Design: Four-lane expressway, 80 km/h design speed, 24.5m roadbed width
- Infrastructure: Includes 2 large bridges, 76 regular bridges, 5 long tunnels, and 4 medium tunnels, with 12 interchanges and various service facilities.
- Total Investment: Estimated at 12.531 billion yuan, supporting economic development across Honghe Prefecture.
Completion and Opening
- Wenshan Section: Opened simultaneously with the Pingwen Expressway on December 26, 2016.
- Mengzi Section: Completed in May 2017.
- Full Opening: Achieved on November 15, 2017, four months ahead of schedule, significantly reducing travel times and enhancing regional connectivity.
Completion and Opening Dates:
The Mengzi-Wenshan-Yanshan Expressway intersects and connects interchangeably with the Pingwen Expressway at Bozhu Town within Wenshan City, integrating into the national, provincial, and local expressway networks. It provides access north to Kunming, Qujing, and Zhaotong in Sichuan; south to Tianbao and Hekou for international travel; west to Honghe and Pu’er for access to Chuxiong, Dali, and Xishuangbanna; and east to Guangxi and Guangdong for access to developed coastal areas.
The Mengzi-Wenshan-Yanshan Expressway is a critical segment of Yunnan Province’s north-south highway network, serving as a vital transportation artery from southern and southeastern Yunnan through Guangxi to the sea, essential for economic connectivity between Wenshan and Honghe prefectures.
Wenshan Section:
The Wenshan (Wenshan to Yanshan) segment of the Mengzi-Wenshan-Yanshan Expressway was completed and opened to traffic simultaneously with the Pingwen Expressway on December 26, 2016.
Mengzi Section:
The Mengzi to Wenshan segment of the Mengzi-Wenshan-Yanshan Expressway was completed in May 2017.
On November 15, 2017, the Mengzi-Wenshan-Yanshan Expressway was fully opened to traffic, achieving completion four months ahead of schedule. The travel time from Wenshan to Mengzi was reduced from the original 3.5 hours to 1.5 hours.
