On the evening of April 10, the erection of the first steel box girder of the Hongqimen Bridge of the South (Sand)-China (Shan) Expressway Project was completed.

According to reports, the bridge steel box girder has a total of 75 segments, with a total weight of 26,000 tons, and the largest segment weighs 460 tons.

   The Hongqimen Bridge is a control project for the Nanzhong Expressway project across the Hongqili Waterway. The bridge is 1,126 meters long, and the main beam adopts a flat streamlined full-width steel box girder.

The first steel box girder erected this time is 13.65 meters long, 36.4 meters wide (excluding air nozzles), 3.5 meters high, and weighs 360 tons.

   In order to ensure the successful erection of the first 360-ton steel box girder, the Nanzhong Expressway Project Department of China Railway Bridge Bureau formulated a special construction plan.

After 3 hours, the steel box girder was in place with zero error.

   The Nanzhong Expressway project is a major transportation infrastructure project in the Guangdong-Hong Kong-Macao Greater Bay Area.

The starting point of the main line of the project is connected to the Nansha Port Expressway, and the end point is connected to the Zhongjiang Expressway, which is connected to the Xinlong Interchange of the Guangzhou-Macao Expressway. The North-South Corridor is planned to be completed simultaneously with the Shenzhen-Zhongshan Corridor in 2024.

(Cai Minjie, Chen Xin, Chen Zhang, Liu Yinghan, video source, China Railway Bridge Bureau)

Responsible editor: [Luo Pan]