Russian officials insist that the tunnel is an economic idea whose time has now come and that it could be ready within ten years. They argue that it would repay construction costs by stimulating up to 100 million tons of freight traffic each year, as well as supplying oil, gas and electricity from Siberia to the US and Canada.[...]
The tunnel across the international date-line would be built in three sections through two islands in the Bering Strait and would link 6,000km (3,728 miles) of new railway lines. The tunnel alone would cost an estimated $10-12 billion to construct.
Link -via Gizmodo | Image: St. John Fisher College