China plans world’s longest Sea Tunnel at $42 billion

China will invest 260 billion yuan, or about $42 billion (27.7 billion pounds), to revive a long-stalled plan to build the world’s longest undersea tunnel across the Bohai Strait linking the country’s eastern and northeastern regions, state media said on Thursday. The 123-km (76.4-mile) tunnel will run from the port city of Dalian in northeastern Liaoning province to Yantai city in eastern Shandong. The report did not say when the project will be completed. China announced plans in 1994 to build the tunnel, at a cost of $10 billion, and set to be completed before 2010. But more than 20 years on, the project remains stuck in the planning stageJapan has the world’s longest undersea tunnel. The 54-km Seikan tunnel links Honshu and Hokkaido islands and started operating in 1988 after more than two decades of construction.