July, 1979Established in July, 1986, the Department was reorganized from the “Engineering Office for Cross-Island Highway between Chiayi and Yushan, Directorate General of Highways” established in July, 1979, whose full name was “Southern Area Engineering Office of Western Coastal Highway, Directorate General of Highways of Taiwan Province.”
Jul. 1st, 1999On Jul. 1st, 1999, the Directorate General of Highways was transferred under the command of Ministry of Transportation and Communication, and the Department was renamed as “West Coast Expressway Southern Region Engineering Office, Directorate General of Highways, Ministry of Transportation and Communications.”
Jan. 30th, 2002The organization was renamed as West Coast Expressway Southern Region Engineering Office, Directorate General of Highways, Ministry of Transportation and Communications on Jan. 30th, 2002.
Jan. 15th, 2018The organization structure of West Coast Expressway Southern Region Engineering Office, Directorate General of Highways, Ministry of Transportation and Communications was adjusted on Jan. 15th, 2018.
Sep. 15th, 2023The organization structure of Southern Region New Construction Branch Office,Highway Bureau, Ministry of Transportation and Communications was adjusted on Sep. 15th, 2023.