Complex sentence: Construction of the Floodway started on October 6,1962 and finished in March 1968, was a major undertaking with 76.5 million cubic metres (2.75 billion cubic feet) of earth excavated--more than what was moved for the Suez Canal.
Split into simpler sentences: Construction of the Floodway started on October 6,1962 and finished in March 1968. The construction was a major undertaking with 76.5 million cubic metres (2.75 billion cubic feet) of earth excavated--more than what was moved for the Suez Canal.