The east man-made island of the Hong Kong-Zhuhai-Macao Bridge is illuminated on Saturday. Cars exiting the bridge then enter a tunnel built into the island. LIANG XU/XINHUA

Opening date unclear for link to Hong Kong, Macao, Zhuhai

Work on the principal section of the world's longest sea-span, the Hong Kong-Zhuhai-Macao Bridge, is expected to be completed in early February, China Daily has learned.

The principal section, a 29.6-kilometer bridge-island-tunnel complex, stretches across the Pearl River Estuary.

The bridge, when operational, will become the first completed infrastructure project built and managed jointly by the governments of Guangdong province, the Hong Kong Special Administrative Region and Macao SAR.

The new timetable, disclosed by Su Quanke, chief engineer of the HZMB Authority, in an exclusive interview, is the first update since an official announcement several months ago that major construction work on the principal section would be completed before the end of 2017 in the Guangdong-Hong Kong-Macao Greater Bay Area.

Su said that before Lunar New Year, which falls in the middle of February, the HZMB Authority will set a date to announce that the principal section is complete.

The latest cost estimate for the total 55-km bridge is 120 billion yuan ($18.4 billion), including 48 billion yuan for the principal section, HZMB Authority finance department manager Su Yi told China Daily.

Neither Su Quanke nor Su Yi could specify a date when the entire bridge will be ready for traffic. That is a matter for the central government.

Su Quanke noted the bridge will stand as a monument to collaboration between the three regional governments despite their having different social systems.

He described the bridge as the perfect link, not merely the first physical connection tying together the east and west of the Pearl River Estuary, but also an "emotional connection" linking the different cultures of the Hong Kong and Macao SARs to the Chinese mainland.

The HZMB Authority, formed jointly by the governments of Guangdong province and the Hong Kong and Macao SARs, is the legal entity in charge of the principal section of the bridge, its construction, operation and maintenance.

Su Quanke, as chief engineer, said quality, including even the smallest detail, was the priority for the bridge authority. He said the bridge carries more than 400 patents. The world's leading bridge technologies have been adapted, along with exclusive innovations regarding island-tunnel construction.

Some mainland factories involved in the HZMB production line have received orders from the United States, Norway and Serbia for bridge projects, Su Quanke said.

He said the bridge is an achievement that reflects the principal goal set out at the 19th National Congress of the Communist Party of China in October－that is, to meet the people's ever-growing need for a better life.

Su Yi, the finance manager, said the bridge will spur economic development and promote more exchanges and improved communication across the Greater Bay Area. The investment in the HZMB will take decades to recover but will ensure the economic future of the bay area, Su Yi said.

According to an official estimate, the net present value of the project could reach 40 billion yuan in 20 years. The designed life span of the bridge is 120 years.

Su Yi predicted that over the next 50 years, the Greater Bay Area will see returns in terms of economic and social benefits in excess of the 94 billion yuan total government investment.

Of the remaining 26 billion yuan investment, which came from bank loans, Su Yi said the money will be paid back from bridge tolls over the next 30 years.

Luis Liu and Miriam Zhang contributed to this story.