ZHUHAI, China (CCTV) — The construction of a primary underground tunnel of the cross-sea HK-Zhuhai-Macao Bridge in Zhuhai City of south China’s Guangsong Province was linked up on Monday, marking a milestone toward completing one of the world’s longest bridges. Construction of the Gongbei Tunnel has been one of the most difficult parts of building the 55-kilometer bridge. The 2,741-meter tunnel connects Zhuhai City to the main bridge. “The completion means the key techniques we […]