Complex sentence: There are two stone piers at each end of the bridge: the western piers have reliefs of sailing ships, while the eastern piers have a relief of a native person and a canoe on one side, as well as a Henley rower on the other.
Split into simpler sentences: There are two stone piers at each end of the bridge. The western piers have reliefs of sailing ships; the eastern piers have a relief of a native person and a canoe, and a Henley rower on the other.