深井交匯處是十五公里長的新屯門高速公路系統的一部分。這條高速公路連接位於青山灣的屯門新市鎮和荃灣。這個雙向三線行車的道路系統大部分都是架空的，將來往屯門和荃灣之間的行車時間減少至大約15分鐘。The Sham Tseng interchange, part of the new, fifteen kilometer Tuen Mun express highway system. The expressway links the new township of Tuen Mun on Castle Peak Bay, with Tsuen Wan. Much of the dual, three-lane carriageway road system is elevated, and cuts travelling time between Tuen Mun and Tsuen Wan to about fifteen minutes.