The Queensferry Crossing is a cable-stayed bridge structure, with three towers each 207 metres (679ft) high. Including approaches, the overall length of the bridge is 1.7 miles (2.7 kilometres); at opening, it was the longest triple tower cable-stayed bridge in the world.
Completed in 2017, the bridge is one of Scotland’s most significant pieces of infrastructure, spanning the Firth of Forth and carrying strategic traffic North and South.
LITE was introduced to the project by our partner Signify. The project requirement was to upgrade the bridge’s outdated Tower lighting with a modern, energy-efficient LED solution on behalf of Transport Scotland. Working closely with BEAR Scotland, LITE developed the lighting design and specification. An on-site light trial was undertaken to test and confirm performance levels and refine the final bill of materials before contract award.
The challenge would require a luminaire with an output powerful enough to reach the top of the 207 metre tower, with an optic range narrow enough to limit any light spillage and wide enough to provide the uniformity to the base of the tower. In addition the selected light fitting specification required to have the suitable marine grade paint finish and vibration resistance certification.
The final solution incorporates the ReachElite IntelliHue Powercore range of products – the ReachElite Punch which has a narrow optic (3° Native, 5°, 10°, 20°, 40°, 60°, 80°, 10° x 40°) and the High Output (20° Native, 24°, 33°, 55°, 73°, 88°, 25° x 43°). These optical options allowed the final solution to cover the tower height (207m) and provide the ultimate light uniformity required from the base to the top, delivering a robust, high-performance solution suitable for long-term operation in a demanding marine environment.
Control is delivered via a Pharos LPC Lighting Playback Controller integrated with Signify’s Interact Landmark Monitor App, providing centralised control and monitoring of the system.
