Yuen Long Highway
Yuen Long Highway () is a Hong Kong expressway connecting Au Tau in Yuen Long and Lam Tei in Tuen Mun of New Territories. Part of Route 9, it bypasses Yuen Long Town and the rural areas of Lam Tei, Hung Shui Kiu and Ping Shan, providing a continuation of Tuen Mun Road to Yuen Long District. History. Yuen Long Highway was completed in phases. The section known as "Yuen Long to Tuen Mun Eastern Corridor" during planning stage, which links the Lam Tei and Tong Yan San Tsuen interchanges, was opened on 1 July 1993. This was  followed by the "Yuen Long Southern Bypass" between Tong Yan San Tsuen and Pok Oi Hospital by way of the Shap Pat Heung Interchange, the construction of which started in 1992 and finished in December 1994. The opening of the Tai Lam Tunnel in 1998 brought additional traffic flows to Yuen Long Highway, causing congestion around the Pok Oi Interchange. A dual two-lane vehicular bridge was therefore constructed above the interchange with a view to easing the traffic volume channelling through the roundabout. With the opening of Pok Oi Flyover on 5 February 1999, vehicles travelling between Yuen Long  Highway and Tai Lam Tunnel or San Tin Highway no longer have to enter the roundabout at Pok Oi Interchange. In order to accommodate the expected traffic from Route 10 cross-border corridor to and from Shekou/Dongjiaotou in Shenzhen over Deep Bay, the road had been finished upgrading to a dual 3-lane carriageway from its original dual 2-lane carriageway in February 2006. Interchanges. !|Location !|km !|Interchange name !|Exit !|Destinations !|Notes