Rainbow Bridge Opening Day

What Is Rainbow Bridge Opening Day?

Every August 26th is "Rainbow Bridge Opening Day" (レインボーブリッジ開通記念日) in Japan. On August 26, 1993, Tokyo Bay's Rainbow Bridge (レインボーブリッジ) officially opened to traffic, connecting the Shibaura district of central Tokyo with the Odaiba waterfront development area in Tokyo Bay. Its official name is the "Tokyo Port Connector Bridge"; "Rainbow Bridge" is a nickname chosen through a public contest. The bridge, illuminated after dark, became an instantly iconic landmark of Tokyo's waterfront and a symbol of the city's dynamic development in the 1990s.

The Rainbow Bridge

The Rainbow Bridge is a suspension bridge with a total length of 798 meters (main span: 570 meters) carrying two levels of traffic: the upper deck carries the Shuto Expressway Route 11 (Daiba Route), while the lower deck carries the Yurikamome automated transit line (ゆりかもめ) in the center, with a general road (a port access road) and pedestrian promenades on either side. Its towers stand 126 meters tall, and construction began in 1987. The dual-deck, multi-modal design reflects the bridge's role as a critical piece of infrastructure connecting Tokyo's waterfront redevelopment to the rest of the city.

Odaiba and Tokyo Bay Development

The Rainbow Bridge was built to serve the Odaiba (お台場) waterfront development — one of Japan's most ambitious urban redevelopment projects of the late 20th century. Odaiba occupies landfill islands in Tokyo Bay and was developed through the 1980s and 1990s as a showcase of futuristic urban planning, featuring major shopping centers, entertainment venues, a replica of the Statue of Liberty, and, in neighboring Ariake, the Tokyo Big Sight convention center. The Rainbow Bridge made Odaiba accessible by car, bus, and rail.

Rainbow Bridge as a Cultural Icon

The Rainbow Bridge's nighttime illumination — including special rainbow-colored lighting around the New Year holidays and colors for events such as pink for the Pink Ribbon campaign on October 1 — quickly made it one of Tokyo's most photographed landmarks and a favorite backdrop for films and television dramas, such as the 2003 hit movie "Bayside Shakedown 2," whose Japanese subtitle means "Seal Off the Rainbow Bridge!" The view of the bridge reflected in Tokyo Bay, with the city skyline behind it, is one of the defining images of modern Tokyo.

Fun Facts

• Walking across: The Rainbow Bridge's promenades are open to pedestrians free of charge during set hours (cyclists can cross by pushing their bikes on a special trolley), offering spectacular views of Tokyo Bay, the Odaiba waterfront, and the city skyline from an unusual vantage point.
• Built at sea: The tower foundations and the Daiba-side anchorage were built offshore using the pneumatic caisson method.