Complex sentence: The bridge's construction has been attributed to Samuel Brown, but this has been questioned; some sources have suggested that it may have been built by Thomas Cheek Hewes, a Manchester millwright and textile machinery manufacturer.
Split into simpler sentences: The bridge's construction has been attributed to Samuel Brown, but this has been questioned. Some sources have suggested that it may have been built by Thomas Cheek Hewes, a Manchester millwright and textile machinery manufacturer.