Engineering marvel across and under sea will open in new year

When Su Quanke looks out over the Hong Kong-Zhuhai-Macao Bridge, he does not see only steel pillars, asphalt and cables, but a long dragon - a symbol of China's engineering prowess.

As the project's chief engineer, Su is familiar with every inch of the vast crossing, which opens next year after the construction of 22.9 kilometers of bridge, four tunnels and four artificial islands.

The 55-km structure is the longest of its kind in the world and is being built with 420,000 metric tons of steel, enough to build 60 Eiffel Towers, he said.