# Bac Giang–Lang Son Expressway

The Bac Giang–Lang Son Expressway (Vietnamese: Đường cao tốc Bắc Giang–Lạng Sơn) is the first expressway section of the North-South Expressway East system passing through the two provinces of Lạng Sơn and Bắc Giang.

## Planning

According to the planning from 2015 to 2021, this expressway and the Hanoi–Bac Giang expressway were once part of the Hanoi–Lang Son Expressway, old symbol is CT.03 before the entire old highway was merged into part of the North-South Expressway East
This route has a total length of 107 km, including 2 sections: Hữu Nghị-Chi Lăng and Chi Lăng-Bắc Giang.

## Design

The Chi Lăng-Bắc Giang section is 64 km long, of which the section through Bắc Giang is 22 km long and Lạng Sơn is 42 km long, starting from Km 45+100. (intersection with National Route 1 at Mai Sao commune, Chi Lăng district, Lạng Sơn province) and the end point at Km 108+500 connecting to National Route 1, Hanoi–Bac Giang Expressway section, 25 m wide road surface, including 4 lanes, 2 emergency lanes with design speed of 100 km/h
The Hữu Nghị-Chi Lăng section is 43 km long. In phase 1, the road is invested in 4 lanes without emergency lanes, with emergency stops every 4 – 5 km/point, the road surface is 17m wide, maximum speed is 90 km/h. Phase 2 will increase to 6 lanes and 2 continuous emergency lanes, roadbed width 32.25m; maximum speed 100 km/h.

## Route details
### Lanes

* Hữu Nghị-Chi Lăng section 4 lanes, with emergency stops every 4–5 km
* Chi Lăng-Bắc Giang section: 4 lanes, 2 emergency lanes

### Length

* Hữu Nghị-Chi Lăng section: 43 kilometres (27 mi)
* Chi Lăng-Bắc Giang section: 64 kilometres (40 mi)

### Speed

* Hữu Nghị-Chi Lăng section: Maximum 90 kilometres per hour (56 mph), Minimum: 60 kilometres per hour (37 mph)
* Chi Lăng-Bắc Giang section: Maximum 100 kilometres per hour (62 mph), Minimum: 60 kilometres per hour (37 mph)

## List of interchanges and features

* IC - interchange, JCT - junction, SA - service area, PA - parking area, BS - bus stop, TN - tunnel, TB - toll gate, BR - bridge
| No. | Name | Dist. from Origin | Connections | Notes | Location | Location |
| Connect with Nanning–Youyiguan Expressway through to Hữu Nghị International Border Gate, Cao Lộc, Lạng Sơn ||||||||
| 1 | Hữu Nghị International Border Gate JCT | 1.8 | National Route 1 | Under Construction | Lạng Sơn | Cao Lộc |
| TG | Toll Gate | | | Under Construction | Lạng Sơn | Cao Lộc |
| 2 | Cao Lộc IC | 5.3 | National Route 1 | Under Construction | Lạng Sơn | Cao Lộc |
| 3 | Lạng Sơn IC | 11.5 | National Route 4B | Under Construction | Lạng Sơn | Lạng Sơn City |
| 4 | IC.4 | 17.8 | National Route 1 | Connect with Tien Yen–Lang Son–Cao Bang Expressway Not Construction | Lạng Sơn | Cao Lộc |
| 5 | IC.5 | 32.8 | National Route 1 | Under Construction | Lạng Sơn | Chi Lăng |
| 6 | Mai Sao IC | 44.75 | National Route 1 | | Lạng Sơn | Chi Lăng |
| 7 | National Route 279 IC | 56.6 | National Route 279 | | Lạng Sơn | Chi Lăng |
| BR | Railway overpass 1 | ↓ | | Pass Hà Nội–Đồng Đăng Railway | Lạng Sơn | Hữu Lũng |
| 8 | Hồ Sơn IC | 80.0 | Đường tỉnh 242 | | Lạng Sơn | Hữu Lũng |
| BR | Thương River 1 Bridge | ↓ | | Pass Thương River | Lạng Sơn | Hữu Lũng |
| BR | Thương River 2 Bridge | ↓ | | Pass Thương River | Lạng Sơn–Bắc Giang Border | Lạng Sơn–Bắc Giang Border |
| BR | Railway overpass 2 | ↓ | | Pass Hà Nội–Đồng Đăng Railway | Bắc Giang | Lạng Giang |
| BR | Railway overpass 3 and National Route 37 | ↓ | | Pass National Route 37 and Kép–Hạ Long railway | Bắc Giang | Lạng Giang |
| 9 | National Route 37 | 94.0 | National Route 37 | | Bắc Giang | Lạng Giang |
| TG | Toll Gate | 104.0 | | | Bắc Giang | Lạng Giang |
| 10 | Xương Lâm IC | | | Under Construction | Bắc Giang | Lạng Giang |
| 11 | Dĩnh Trì JCT | 107 | National Route 31 National Route 1 | | Bắc Giang | Bắc Giang City |
| Connect directly with Hanoi–Bac Giang Expressway ( National Route 1) |||||||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Proposed Incomplete access Route transition Unopened |||||||