Introduction to Rainbow Bridge: Rainbow Bridge is known as the most romantic date spot. Many Japanese idol dramas are filmed here. It is also a symbol of Tokyo Bay and Odaiba. The bridge has a total length of 918 meters and a span of 570 meters. Construction started in 1987 and was completed and opened to traffic in 1993. The bridge is a double-layer structure. The upper layer is the Odaiba section of the Capital Expressway No. 11; the lower layer is ordinary roads and sidewalks, and an unmanned coastal high-speed train called "Yurikamome" shuttles back and forth.