South Bay Highway was opened at 6/1/2021 22:00HKT with the Haisey extension. This highway connects East Door Tunnel and Haisey directly without travelling Mo or East Door. The whole highway can be identified as two parts, a short covered elevated passage at East Door Estate and Rainsey Bridge. Currently, the end of this highway is located at the middle of Rainsey Bridge, which is also the eastern end of Strategic Route 4. The rest section of this Highway is blocked and may be opened in further expansion.
