Complex sentence: The freeway runs from the northern harbor Keelung to the southern harbor Kaohsiung, where there was an 8.6 km branch (No.1A) connecting the Taiwan Taoyuan International Airport.
Split into simpler sentences: The freeway runs from the northern harbor Keelung to the southern harbor Kaohsiung. There was an 8.6 km branch (No.1A) connecting the Taiwan Taoyuan International Airport.