Complex sentence: Before bridges were built over the Suzhou Creek, citizens had to use one of three ferry crossings: one near Zhapu Road, one at Jiangxi Road, and one near the mouth of the Suzhou River.
Split into simpler sentences: Before bridges were built on the Suzhou Creek, citizens had to use ferries. There were three ferry crossings, one near Zhapu Road, one at Jiangxi Road and one near the mouth of the Suzhou River.