The Heung Yuen Wai Highway (HYWH) is an approximately 11-km dual two-lane carriageway connecting the Fanling Highway and the Heung Yuen Wai Boundary Control Point. The HYWH comprises the 4.8km Lung Shan Tunnel, the 0.7km Cheung Shan Tunnel and 5.5km of viaducts and at-grade roads with four interchanges along its route.
The Lung Shan Tunnel is the longest land-based road tunnel in Hong Kong and has adopted a new technology of u-turn of the tunnel boring machine within a man-made cavern during construction of the two tunnel tubes.
The HYWH seamlessly connects to the new boundary control point, providing efficient cross-boundary access between Hong Kong and eastern Shenzhen, Huizhou and eastern Guangdong, enhancing the "one-hour living circle" in the Guangdong-Hong Kong-Macao Greater Bay Area.
Besides, residents in the North District and drivers may take the HYWH to reach the Fanling Highway for accessing Sheung Shui, Tai Po and Kowloon. The HYWH can improve the traffic in the North District and, in particular, alleviate the busy traffic conditions in the area around Sha Tau Kok Road. It can also greatly facilitate long-term economic and social development in the North District.