Projects

Urbanscape Lighting Feature Lighting

Sumida River, Ryogoku Bridge IlluminationsChuo Ward, Tokyo

Working in harmony with its environment, a new vision to reflect the elegance of the Sumida River

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  • The illuminated Ryogoku Bridge, viewed from a distance, with its warm incandescent light blending with the surrounding environment to create an attractive nightscape.

  • Nighttime view of Ryogoku Bridge, which is said to have been named after the bridge which connected Tokyo (then Musashi Province) and Chiba (then Shimousa Province) across the Sumida River during the Edo period. The classical style of the lighting along the bridge is designed to furnish it with an appearance evocative of such history.

  • The color tones of the linear lighting illuminating the railing of the circular balconies on the walkway have been harmonized with the bridge girder lighting to create a unified lighting scheme.

  • LEDioc FLOOD NEO FC floodlights illuminating the bridge girders.

about

Installation date

March, 2025

Location

Built in 1932 as one of the bridges for the reconstruction of Tokyo following the Great Kanto Earthquake, Ryogoku Bridge is where National Route 14 traverses the Sumida River. A bridge of great historical significance, it was the first bridge built downstream of the Sumida River at the time of its original construction back in 1659, and was placed under the direct control of the shogunate throughout the Edo period.

The Tokyo National Highway Office, Kanto Regional Development Bureau of the MLIT conducted the installation of an LED lighting design scheme which complements its surrounding environment, with the new scheme commencing in March 2025. A striking nighttime display has been created through combining linear lighting positioned continuously along the railing of the deck curvature, with compact LEDioc FLOOD NEO FC floodlights installed below the girders. The bridge girder lighting is dimmed and toned to match the color of the railing lighting, adjusting the overall color tone and brightness to create a harmonized visual for the line of light, and in turn accentuate the form of the bridge. Hardware for the mounting of the rail lighting was optimized through prototyping and on-site adjustments, with careful consideration given to compactness and ease of installation so as not to detract from the imagery of the bridge. Illuminating Ryogoku Bridge with a warm color of light, the new scheme brings an added sense of serenity and elegance to the nightscape of the Sumida River, adorning the historic bridge with a modern glow.

Furthermore the road lighting along where National Route 14 leads up to the bridge, with a view to reducing the carbon footprint and maintenance costs required for the management of its roads, has also been updated to LEDioc ROAD roadway lights, providing safe and comfortable illumination through energy-efficient light.

Specification

  • LEDioc FLOOD NEO FC class 40 - 110

  • Wireless Control System Wi-CONNECTY

    Base unit - 2

    Extension unit - 2

  • LEDioc ROAD - 21

  • Linear luminaires [cooperated with MORIYAMA Corp.] - 356