After crossing through Tamsui River via Guandu Bridge, the highway enters Bali before turning towards the coast.

The highway then runs along the coasts of northwestern Taiwan for the remainder of the route.

After leaving Bali, the highway passes Linkou and enters Taoyuan City.

In Taoyuan the highway passes through the coastal districts of Luzhu, Dayuan, Guanyin, and Xinwu.

The stretch in Dayuan is the crash site of China Airlines Flight 676.