Coastal Zone Management Act Article 24

Where coastal disaster prevention works concurrently serve as other facilities, such as roads, water gate, and cargo unloading terminal, the competent authority of the facility shall construct, maintain and manage the coastal disaster prevention work.
中文原文 海岸管理法第24條
海岸防護設施如兼有道路、水門、起卸貨場等其他設施之效用時,由該其他設施主管機關實施該海岸防護設施之工程,並維護管理。

English translation for reference only; the Chinese text prevails. Not legal advice.