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.[1]
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
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Route 3 at Au Tau
Route 10 at Lam Tei
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