The Shing Mun Tunnels are dual two-lane tunnels connecting Lei Muk Shue (Tsuen Wan District) and Tai Wai (Sha Tin District), with a total length of 2.6 kilometers. The Southtube and the Northtube of the tunnel were commissioned in 19 respectively. The Lion Rock Tunnel is a dual two-lane tunnel connecting Kowloon Tong (Kowloon City District) and Tai Wai (Shatin District), with a total length of 1.4 kilometers. The toll of Tseung Kwan O Tunnel is waived upon the commissioning of the Tseung Kwan O-Lam Tin Tunnel.

The Tseung Kwan O Tunnel is a dual two-lane tunnel connecting Kwun Tong District and Tseung Kwan O (Sai Kung District), with a total length of 0.9 kilometers. The Kai Tak Tunnel is a dual two-lane tunnel built under the runway of the former Kai Tak Airport, connecting Kowloon Bay (Kwun Tong District) and Ma Tau Kok (Kowloon City District), and with a total length of 1.3 kilometers. It was commissioned in 2019 and is free of charge.

It has a total length of 3.7 kilometers and a dual three-lane carriageway (four lanes on westbound from Causeway Bay Typhoon Shelter to Wan Chai North). The Central and Wan Chai Bypass Tunnel connects the Connaught Road Central Elevated Road in Central, Wanchai North and the Eastern Corridor in North Point. The Aberdeen Tunnel is a dual two-lane tunnel connecting Happy Valley (Wan Chai District) and Wong Chuk Hang (Southern District), with a total length of 1.9 kilometers. Constructed under a 'Build, Operate and Transfer' contract, the tunnel was commissioned in 1989 and returned to government management since 2016. The Eastern Harbour Crossing is a dual two-lane tunnel connecting Quarry Bay (Eastern District) and Cha Kwo Ling (Kwun Tong District), with a total length of 2.29 kilometers. Constructed under a 'Build, Operate and Transfer' contract, the tunnel was commissioned in 1972 and returned to government management since 1999. The Cross-Harbour Tunnel is a dual two-lane tunnel connecting Hung Hom (Yau Tsim Mong District) and Causeway Bay (Wan Chai District), with a total length of 1.9 kilometers.The toll ranges from $8 to $30. Transport Department - Details and Location Maps Cross Harbour Tunnel

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