The tunnels are: Lion Rock Tunnel (1967), Shing Mun Tunnels (1990) and Sha Tin Heights Tunnel (2008). Sha Tin Heights Tunnel opened in March 2008 to lessen the traffic of the Kowloon Tunnels and Tai Po Road. It is part of Route 8 that connects Tai Wai to the airport over the Stonecutters Bridge and through the Nam Wan Tunnel.