What is the general geographical location of the US$10.6 billion bridge and tunnel project?
Lingdingyang:  The Humen separates Lingdingyang and Shiziyang the upper channel of the Pearl River Estuary in the north and the Jiuzhouyang the lower channel of the Pearl River Estuary at the southern tip of Xiangzhou and the western tip of Lantau all the way till the southern end of the Wanshan Archipelago. Hong Kong–Zhuhai–Macau Bridge:  The 50 km link is expected to cost US$10.6 billion (HK$83 billion).
i don't know