This paper analyses the economic effects of the Bering Strait Tunnel and its investment method. The Bering Strait Tunnel Project has its own proper implications in enhancing world-wide economic growth as well as Russia and US economic growth and promoting world peace. As far as its economic effects, the Bering Strait Tunnel Project will be expected to facilitate not only economic growth between US and Russia through the expansion of social overhead capital investment, the exploitation of natural resources such as crude oils and gases in Siberia and Alaska, and the acquisition of mutual trade gains but also world economic growth. Furthermore it will devote the settlement of world peace through world-wide integration and cooperation by geographical connection of US and Russia. The construction of the Bering Strait Tunnel project turns out to have enormous economic efficiency in view of cost-benefit analysis. And it is thought to be desirable to select build-own-transfer method in constructing the Bering Strait Tunnel. Lastly to finance investment cost, it is possible to organize and incorporate international consortium which consists of civil capital, public capital of US and Russia, China and international fund.