Thorn reported that it provided much of the lighting for the new Hong Kong-Zhuhai-Macao Bridge, the world’s longest sea bridge, which is due to open soon. The company secured two of the three lighting contracts connected with the 115.9 billion yuan (€14.7 billion) project. Thorn’s products light the two artificial islands at the east and west of the crossing as well as the tunnel that leads to the bridge from Hong Kong.
Now, after nine years of construction work, the bridge is nearing completion and is set to start carrying traffic soon. It connects the islands of Hong Kong and Macau with the city of Zhuhai on the mainland, spanning China’s Pearl River Delta.
With three lanes in each direction, the 30km bridge, which is part of a crossing totaling 42 kilometers, will drastically reduce driving time from Hong Kong to Zhuhai and Macau from about 4½ hours to just 40 minutes. The Chinese government supports the project as part of its plan to develop the Guangdong-Hong Kong-Macau Greater Bay Area, which together forms Asia’s fifth largest economy.
Construction Had to Stand up to Harsh Conditions and Meet High Standards
The bridge construction had to deal with frequent typhoons, airport height restrictions, high environmental standards, and shipping to the materials and components. Thorn was one of only three suppliers in the final round of bidding to light the artificial islands, and the company eventually won thanks to its ability to meet rigorous technical criteria and the extremely high construction standards. The company supplied 120 Champion Pro LED 132 high-power floodlights, mounted on 12 high masts.
The bridge builders chose Thorn’s Champion Pro LED fittings due to their high efficacy of 115lm/W and long lifetime of 70,000 hours (L80). Additionally, the luminaires feature an IP66 rating for ingress protection and successfully passed a 1000-hour salt-spray test. The fitting consumes just 600W of power, compared to 1000W for conventional alternatives.
Thorn Secures Tunnel Lighting Contract
The Hong Kong team secured the tunnel lighting contract which uses 6000 of Thorn’s GTLED Entry and GT58 luminaires with DALI drivers to illuminate a one-kilometer tunnel. These dedicated tunnel luminaires boast high performance and uniformity and feature a long life.
“It was vital that we find the right partner to work with us on this large-scale and prestigious project. We had stringent technical demands and a challenging environment to deal with, and we needed a supplier who could support us and work closely with us. Zumtobel Group and Thorn have done a great job,” said Mr. Guo Wei, equipment manager of CCCC First Harbor Engineering Co., Ltd.
“We were delighted to work with Zumtobel Group and Thorn on the lighting for this major tunnel. They have fulfilled a challenging lighting brief and provided us with great products and great service. The results speak for themselves,” said Keith Ha, product manager of China State Mechanical & Electrical Engineering Limited.