Construction work is divided into three sections and is under way simultaneously. The northern section extends from Keelung to Miaoli, the central section from Miaoli to Hsilo, and the southern section from Hsilo to Fengshan. All work is on or ahead of schedule. The freeway between Sanchung and Yangmei in the northern section is already opened to traffic.
高速公路工程，目前正分北、中、南三區分別進行：北區工程路線，由基隆市南端中興隧道起至苗栗縣銅鑼灣鄉止，三重市至楊梅業已通車；中區，自苗栗縣銅鑼灣至西螺為止；南區，自西螺至鳳山為止，各段工程均能達到預定的進度，部份且有超前的現象。