4th Ring Road

Fourth Ring Road
Military trucks on the Ring Road in 2008
Route information
Length:	65.3 km (40.6 mi)
Existed:	June 2001 – present
Major junctions
	Airport Expressway G1 Beijing-Harbin Expressway G2 Beijing-Shanghai Expressway G4 Beijing-Hong Kong-Macau Expressway G6 Beijing-Lhasa Expressway G45 Daqing–Guangzhou Expressway

The 4th Ring Road (Chinese: 四环路; pinyin: Sìhuánlù) is a controlled-access expressway in Beijing, China which runs around the city, with a radius of approximately 8 kilometres (5.0 mi) from city centre. The total length of the road is 65.3 kilometres (40.6 mi). There are 147 bridges and viaducts that run the length of the Ring Road.

The first section, the northern corridor, was completed in preparation for the 1990 Asian Games. The Ring Road was 'enclosed' in a full circle in June 2001, with standard controlled-access expressway throughout.

The 4th Ring Road runs within the confines of the city of Beijing, more like a rectangle than a circle.

The route travels past: Siyuan Bridge - Chaoyang Park Area - Sihui - Sifang Bridge - Shibalidian - Dahongmen - Majialou - Yuegezhuang Bridge - Fengtai Area - Sijiqing Area - Zhongguancun Area - Jianxiang - Asian Games Village Area - Wanghe Bridge - Siyuan Bridge

The entire express road is complete and open to traffic.

Already in the early 1990s, the northern stretch of the 4th Ring Road from Zhongguancun to Siyuan Bridge existed as a ring road, albeit with far narrower road conditions and with traffic lights. Only three flyover viaducts—those at Jianxiang, Anhui Bridge and Siyuan Bridge—existed.

To commemorate the 50th anniversary of the People's Republic of China, the eastern stretch of the 4th Ring Road was opened from Siyuan Bridge to Shibalidian around October 1, 1999. This was the first part of the ring road to be opened as an 8-lane expressway (4 lanes per direction, not including an emergency belt).