From December 3rd to 8th, the final project of the Shenzhen section of the Guangzhou-Shenzhen-Yanjiang Expressway - the navigation piers and beams of the Sanwei Pier was completed. After completion of the bridges, the entire section of the Shenzhen-Shenzhen section of the Guangzhou-Shenzhen Yanjiang Expressway with a total length of 31.58 kilometers was completed. Shenzhen Maritime Safety Administration implemented the concept of “Four Types of Maritime Affairs”. In response to the characteristics of offshore construction, it dispatched vigilance on the site of maritime patrols, increased the cruising of waters around the construction site, standardized the navigation of ships, and fully safeguarded the safety of the construction of trussed beams.