On April 8, 2021, the Public Resources Electronic Exchange Center of Guangxi Zhuang Autonomous Region issued the announcement of the candidates for the general contracting of the design and construction of the Nanning-Zhanjiang Highway from Nanning to Bobai Nabu, Guangxi Road Construction Group Co., Ltd./Guangxi Transportation Design Group Co., Ltd. Guangxi Road and Bridge Engineering Group Co., Ltd./Guangxi Communications Group Co., Ltd./Guangxi Transportation Design Group Co., Ltd. won the bid for the No. 2 bidding section with 8.76 billion yuan. The total investment of the project is estimated at 16.2 billion.

Introduction to Nanning-Zhanjiang Highway

The Nanning-Bobai Nabu section of the Nanning-Zhanjiang Highway is an important part of the "Lian 13" Expressway in the "1 Ring, 12 Horizontal, 13 Vertical and 25 Links" in the "Guangxi Expressway Network Planning (2018~2030)".

The main line starts from Pumiao Town, Yongning District, Nanning City, and connects with planned Nalian Avenue on the inner side of the southeast corner of G7201 Nanning Ring Expressway. The overall route runs from northwest to southeast, passing through Pumiao Town, Nalou Town, Yongning District, and Lingshan County. Taiping Town, Jiuzhou Town, Sanlong Town, Nalong Town, Wuli Town, Pubei County Baishishui Town, Dacheng Town, Zhanghuang Town, Anshi Town, Shiyong Town, Bobai County Lingjiao Town, Songwang Town, Shuangwang Town and Nabu Town stop at the junction of Guangxi Zhuang Autonomous Region and Guangdong Province, and are connected to the planned Nanning-Zhanjiang Highway in Guangdong. The total length of the route is 186.821km. It adopts two-way four-lane expressway standard, with a design speed of 120km/h and a roadbed width of 26.5m. Set up 38228.4m/140 bridges (including 2740.2m/3 extra-large bridges, 34240.6m/111 bridges, 959.6m/14 medium bridges, and 288m/12 small bridges), 8 tunnels of 6992.5m/8 (including long tunnels) 3067.5m/2, middle tunnel 3531m/5, short tunnel 394m/1), 16 interchanges, 1 separated interchange, 13 overpasses, 169 passages, 4 service areas, parking areas 4 locations, 2 management sub-centers, 2 tunnel management stations, 8 tunnel substations, 1 main line toll station, 11 ramp toll stations, and 3 maintenance work areas.

The Anshi connection line has a total length of 2.306km and adopts the secondary road standard, with a design speed of 60km/h and a subgrade width of 10m. Set up 8 culverts and 4 plane crossings.

The total length of the Shuangwang connection line is 4.053km (newly built 3.4km, using the original road 0.653km, and widening the cross-section to 12m by using the section mark), adopting the second-level highway standard, with a design speed of 60km/h and a roadbed width of 12m. Set up 60m/3 small bridges, and 1 plane crossing.

The scope of this tender is the main line-K1+299.676～K185+920.451 section, the construction drawing of the ash connecting line LK0+000～LK2+306.351 and the Shuangwang connecting line LK0+000～LK3+400 construction drawing survey and design and corresponding engineering construction The general contract of is divided into 2 bidding sections, the specific content is:

The project’s design and construction general contracting plan period is 36 months, 1080 calendar days, of which the construction drawing design period is 6 months, 180 calendar days, starting from the time specified in the start work notice issued by the contractor or supervisor Duration. Editor/Sang Xiaomei