Complex sentence: The passenger service to Clarence Road station closed to passengers in March 1964, allowing freight services to continue to Curran's yard siding until July 1968, when the entire line was closed and quickly taken up.
Split into simpler sentences: The passenger service to Clarence Road station closed in March 1964. Freight services to the Curran's yard sidings continued until July 1968, when the entire line was closed and quickly taken up.