Complex sentence: The Kumeu-Riverhead section had provided transport to Auckland, linking with ferries on Waitemata Harbour in Riverhead, and as the North Auckland Line left these services redundant, the Riverhead Branch was closed on July 18.
Split into simpler sentences: The Kumeu-Riverhead section had provided transport to Auckland, linking with ferries on Waitemata Harbour at Riverhead. As the North Auckland Line made these services redundant, the Riverhead Branch closed on July 18.