On March 2, 2021, China Construction Fifth Engineering Bureau Co., Ltd. and Chongqing Municipal Design and Research Institute Co., Ltd. jointly won the bid for the Jiangnan Tunnel and Chahuang Road Project in Nan'an District, Chongqing. The total bid price was 2.37 billion yuan.
Project details
The Jiangnan tunnel project starts from Furen Avenue, crosses Yanyu Road, crosses the track loop on the ground level, crosses Tongluo Mountain to the east, and ends at Xingtang Road. The main line of the road is 5546.804m in length. It is designed in accordance with the urban arterial road standard, two-way Six lanes, design speed 60km/h. There are 1 extra-long tunnel (Jiangnan tunnel, 4087m long), 2 bridges (the main line viaduct is 515m, the bridge on Yutai Road is 178m), and there are 2 underpasses for vehicles (the underpass on the left side of Yusheng Road is 224m, and Yusheng 76m under the right side of the road).
The starting point of the main line of Chahuang Road project (left line) is connected to Nanshan Road, and the end point is connected to Xingtang Road, the main line of Xingtang Interchange, with a total length of 3061.748m (including 1 tunnel of 980m and 1 bridge of 235.5m); right line of autonomous line (left line) K0 ++638.633 is separated and ends at Xingtang Road, the main line of Xingtang Interchange. The total length of the right line is 2463.447m (including 1 tunnel of 975m and 1 bridge of 212m). Designed according to urban secondary roads, the standard road width is 26 meters, two-way four lanes, and the design speed is 40km/h. In the end, the scale of the project approved by the official document of the competent authority of the industry shall prevail. Editor/Xing Wentao
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